diff --git a/sig-apps/OWNERS b/sig-apps/OWNERS
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index 000000000..e69de29bb
diff --git a/sig-apps/README.md b/sig-apps/README.md
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@@ -0,0 +1,13 @@
+# Apps Special Interest Group
+
+The Apps SIG is to develop most common applications to use in [App Store](../sig-appstore) of KubeSphere. The app is based on Helm and the code repo is [helm-charts](https://github.com/kubesphere/helm-charts/).
+
+## Members
+
+- Hongliang Wang ([@hlwanghl]((https://github.com/hlwanghl))), Lead
+
+## Meetings
+
+## Contact
+
+- Slack [#sig-apps](https://kubesphere.slack.com/messages/sig-apps)
\ No newline at end of file
diff --git a/sigs.md b/sigs.md
index 76470621a..76a36798c 100644
--- a/sigs.md
+++ b/sigs.md
@@ -32,20 +32,20 @@ In general, SIGs operate in a highly cooperative environment. The members of a S
 
 The SIGs at present are:
 
-| Group | Lead | Design Docs |  Slack Channel | Meeting Notes | Description |
-|-------|-------------|-------|---------------|--------------|--------------------|
-| Apps | [Hongliang Wang](https://github.com/hlwanghl) | [Design documentation](./contribution/design/sig-observability) | [#apps](https://kubesphere.slack.com/archives/CLHL8R1C7) | [Notes](https://github.com/kubesphere/kubesphere/issues?q=is%3Aopen+is%3Aissue+label%3Aarea%2Fmonitoring+) | App charts for the built-in App Store |
-| App Store | [Zhengyi Lai](https://github.com/zheng1) | [Design documentation](./contribution/design/sig-observability) | [#appstore](https://kubesphere.slack.com/archives/CLHL8R1C7) | [Notes](https://github.com/kubesphere/kubesphere/issues?q=is%3Aopen+is%3Aissue+label%3Aarea%2Fmonitoring+) | App Store, App template management |
-| Architecture| [Lu Liu](https://github.com/leoendless), [Benjamin Huo](https://github.com/benjaminhuo) | [Design documentation](./contribution/design/sig-observability) | [#architecture](https://kubesphere.slack.com/archives/CLHL8R1C7) | [Notes](https://github.com/kubesphere/kubesphere/issues?q=is%3Aopen+is%3Aissue+label%3Aarea%2Fmonitoring+) | system architecture |
-| Console | [Lu Liu](https://github.com/leoendless) | [Design documentation](./contribution/design/sig-observability) | [#console](https://kubesphere.slack.com/archives/CLHL8R1C7) | [Notes](https://github.com/kubesphere/kubesphere/issues?q=is%3Aopen+is%3Aissue+label%3Aarea%2Fmonitoring+) | dashboard |
-| DevOps | [Jeff Zhang](https://github.com/zryfish) | [Design documentation](./contribution/design/sig-observability) | [#devops](https://kubesphere.slack.com/archives/CLHL8R1C7) | [Notes](https://github.com/kubesphere/kubesphere/issues?q=is%3Aopen+is%3Aissue+label%3Aarea%2Fmonitoring+) | pipeline, s2i, b2i, image registry |
-| Docs | [Pengfei Zhou](https://github.com/FeynmanZhou) | [Design documentation](./contribution/design/sig-observability) | [#docs](https://kubesphere.slack.com/archives/CLHL8R1C7) | [Notes](https://github.com/kubesphere/kubesphere/issues?q=is%3Aopen+is%3Aissue+label%3Aarea%2Fmonitoring+) | User docs, kubesphere.io |
-| Installation | [Feng Guo](https://github.com/pixiake) | [Design documentation](./contribution/design/sig-observability) | [#installation](https://kubesphere.slack.com/archives/CLHL8R1C7) | [Notes](https://github.com/kubesphere/kubesphere/issues?q=is%3Aopen+is%3Aissue+label%3Aarea%2Fmonitoring+) | KubeSphere installer and deployment |
-| Microservice management| [Jeff Zhang](https://github.com/zryfish) | [Design documentation](./contribution/design/sig-observability) | [#microservice](https://kubesphere.slack.com/archives/CLHL8R1C7) | [Notes](https://github.com/kubesphere/kubesphere/issues?q=is%3Aopen+is%3Aissue+label%3Aarea%2Fmonitoring+) | architecture, microservice governance |
-| Multi-cluster| [Jeff Zhang](https://github.com/zryfish) | [Design documentation](./contribution/design/sig-observability) | [#multicluster](https://kubesphere.slack.com/archives/CLHL8R1C7) | [Notes](https://github.com/kubesphere/kubesphere/issues?q=is%3Aopen+is%3Aissue+label%3Aarea%2Fmonitoring+) | multi-cluster management |
-| Multi-tenancy| [Hongming Wan](https://github.com/wansir) | [Design documentation](./contribution/design/sig-observability) | [#multitenancy](https://kubesphere.slack.com/archives/CLHL8R1C7) | [Notes](https://github.com/kubesphere/kubesphere/issues?q=is%3Aopen+is%3Aissue+label%3Aarea%2Fmonitoring+) | workspace, IAM |
-| Network | [Zhengyi Lai](https://github.com/zheng1) | [Design documentation](./contribution/design/sig-observability) | [#network](https://kubesphere.slack.com/archives/CLHL8R1C7) | [Notes](https://github.com/kubesphere/kubesphere/issues?q=is%3Aopen+is%3Aissue+label%3Aarea%2Fmonitoring+) | network policy, CNI plugins, SDN |
-| Observability | [Benjamin Huo](https://github.com/benjaminhuo) | [Design documentation](./contribution/design/sig-observability) | [#observability](https://kubesphere.slack.com/archives/CLHL8R1C7) | [Notes](https://github.com/kubesphere/kubesphere/issues?q=is%3Aopen+is%3Aissue+label%3Aarea%2Fmonitoring+) | Logging, Monitoring, Alerting, Notification |
-| Release | [Calvin Yu](https://github.com/calvinyv) | [Design documentation](./contribution/design/sig-observability) | [#release](https://kubesphere.slack.com/archives/CLHL8R1C7) | [Notes](https://github.com/kubesphere/kubesphere/issues?q=is%3Aopen+is%3Aissue+label%3Aarea%2Fmonitoring+) | release of each version |
-| Storage | [Xin Wang](https://github.com/wnxn) | [Design documentation](./contribution/design/sig-observability) | [#storage](https://kubesphere.slack.com/archives/CLHL8R1C7) | [Notes](https://github.com/kubesphere/kubesphere/issues?q=is%3Aopen+is%3Aissue+label%3Aarea%2Fmonitoring+) | CSI plugins |
-| Testing | [Yaping Liu](https://github.com/liuyp2018) | [Design documentation](./contribution/design/sig-observability) | [#testing](https://kubesphere.slack.com/archives/CLHL8R1C7) | [Notes](https://github.com/kubesphere/kubesphere/issues?q=is%3Aopen+is%3Aissue+label%3Aarea%2Fmonitoring+) | test, release |
+| Group | Lead |  Slack Channel | Meeting Notes | Description |
+|-------|-------------|-------|--------------|--------------------|
+| [Apps](./sig-apps/) | [Hongliang Wang](https://github.com/hlwanghl) | [#sig-apps](https://kubesphere.slack.com/archives/C01163F4B54) | [Notes](https://drive.google.com/open?id=1nRAK2U9flkz-8z7bT2-T_0VneW3w1fx1fJtB5Bu3JyU) | App charts for the built-in App Store |
+| App Store | [Zhengyi Lai](https://github.com/zheng1) | [#appstore](https://kubesphere.slack.com/archives/CLHL8R1C7) | [Notes](https://github.com/kubesphere/kubesphere/issues?q=is%3Aopen+is%3Aissue+label%3Aarea%2Fmonitoring+) | App Store, App template management |
+| Architecture| [Lu Liu](https://github.com/leoendless), [Benjamin Huo](https://github.com/benjaminhuo) | [Notes](https://github.com/kubesphere/kubesphere/issues?q=is%3Aopen+is%3Aissue+label%3Aarea%2Fmonitoring+) | system architecture |
+| Console | [Lu Liu](https://github.com/leoendless) | [#console](https://kubesphere.slack.com/archives/CLHL8R1C7) | [Notes](https://github.com/kubesphere/kubesphere/issues?q=is%3Aopen+is%3Aissue+label%3Aarea%2Fmonitoring+) | dashboard |
+| DevOps | [Jeff Zhang](https://github.com/zryfish) | [#devops](https://kubesphere.slack.com/archives/CLHL8R1C7) | [Notes](https://github.com/kubesphere/kubesphere/issues?q=is%3Aopen+is%3Aissue+label%3Aarea%2Fmonitoring+) | pipeline, s2i, b2i, image registry |
+| Docs | [Pengfei Zhou](https://github.com/FeynmanZhou) | [#docs](https://kubesphere.slack.com/archives/CLHL8R1C7) | [Notes](https://github.com/kubesphere/kubesphere/issues?q=is%3Aopen+is%3Aissue+label%3Aarea%2Fmonitoring+) | User docs, kubesphere.io |
+| Installation | [Feng Guo](https://github.com/pixiake) | [#installation](https://kubesphere.slack.com/archives/CLHL8R1C7) | [Notes](https://github.com/kubesphere/kubesphere/issues?q=is%3Aopen+is%3Aissue+label%3Aarea%2Fmonitoring+) | KubeSphere installer and deployment |
+| Microservice management| [Jeff Zhang](https://github.com/zryfish) | [#microservice](https://kubesphere.slack.com/archives/CLHL8R1C7) | [Notes](https://github.com/kubesphere/kubesphere/issues?q=is%3Aopen+is%3Aissue+label%3Aarea%2Fmonitoring+) | architecture, microservice governance |
+| Multi-cluster| [Jeff Zhang](https://github.com/zryfish) | [#multicluster](https://kubesphere.slack.com/archives/CLHL8R1C7) | [Notes](https://github.com/kubesphere/kubesphere/issues?q=is%3Aopen+is%3Aissue+label%3Aarea%2Fmonitoring+) | multi-cluster management |
+| Multi-tenancy| [Hongming Wan](https://github.com/wansir) | [#multitenancy](https://kubesphere.slack.com/archives/CLHL8R1C7) | [Notes](https://github.com/kubesphere/kubesphere/issues?q=is%3Aopen+is%3Aissue+label%3Aarea%2Fmonitoring+) | workspace, IAM |
+| Network | [Zhengyi Lai](https://github.com/zheng1) | [#network](https://kubesphere.slack.com/archives/CLHL8R1C7) | [Notes](https://github.com/kubesphere/kubesphere/issues?q=is%3Aopen+is%3Aissue+label%3Aarea%2Fmonitoring+) | network policy, CNI plugins, SDN |
+| Observability | [Benjamin Huo](https://github.com/benjaminhuo) | [#observability](https://kubesphere.slack.com/archives/CLHL8R1C7) | [Notes](https://github.com/kubesphere/kubesphere/issues?q=is%3Aopen+is%3Aissue+label%3Aarea%2Fmonitoring+) | Logging, Monitoring, Alerting, Notification |
+| Release | [Calvin Yu](https://github.com/calvinyv) | [#release](https://kubesphere.slack.com/archives/CLHL8R1C7) | [Notes](https://github.com/kubesphere/kubesphere/issues?q=is%3Aopen+is%3Aissue+label%3Aarea%2Fmonitoring+) | release of each version |
+| Storage | [Xin Wang](https://github.com/wnxn) | [#storage](https://kubesphere.slack.com/archives/CLHL8R1C7) | [Notes](https://github.com/kubesphere/kubesphere/issues?q=is%3Aopen+is%3Aissue+label%3Aarea%2Fmonitoring+) | CSI plugins |
+| Testing | [Yaping Liu](https://github.com/liuyp2018) | [#testing](https://kubesphere.slack.com/archives/CLHL8R1C7) | [Notes](https://github.com/kubesphere/kubesphere/issues?q=is%3Aopen+is%3Aissue+label%3Aarea%2Fmonitoring+) | test, release |