Added SIG page

Author: bari12

docs/project_organisation.md

@@ -53,19 +53,7 @@ topic just within the weekly Rucio meeting. A SIG topic can involve one or multi
 Rucio components, or even the entire system. SIGs are open to any interrested community
 member.
 
-Each SIG must define
-
-  - A well-defined objective of the group (Creation of a report, Development of 
-    a functionality, ...)
-  - An expected end-date
-  - Means to achieve the objective, such as regular meetings, a mailing-list, mattermost 
-    channel, a workshop, ...
-  - A convener
-
-Currently there are two Rucio special interest groups:
-
-  - Quality of Service (QoS)
-  - [Metadata](sig_metadata.md)
+Detailed information for Rucio SIGs can be found [here](special_interest_groups.md).
 
 ## Contributors / Developers
 

docs/sig_metadata.md

@@ -19,8 +19,10 @@ End of 2023
 
 ## Means to achieve the objective
 
-A general mattermost channel + ad hoc meetings with interested communities either 
-over Zoom or asynchronously over Mattermost.
+- Mattermost channel: [#metadata](https://mattermost.web.cern.ch/rucio/channels/metadata)
+- eMail list: [email protected]
+- ad hoc meetings with interested communities either over Zoom or asynchronously 
+  over Mattermost.
 
 ## Convener
 

docs/special_interest_groups.md

@@ -0,0 +1,32 @@
+---
+id: special_interest_groups
+title: Special Interest Groups
+---
+
+## Special Interest Groups
+
+Rucio Special Interest Groups (SIG) serve the purpose to offer a forum for interested users,
+operators, and developers to discuss and plan the evolution of a specific part of Rucio.
+The topic of a SIG needs to be well-defined and the community interest on the topic
+needs to be above a threshold to justify the creation of a SIG, instead of covering the
+topic just within the weekly Rucio meeting. A SIG topic can involve one or multiple
+Rucio components, or even the entire system. SIGs are open to any interrested community
+member.
+
+## Structure
+
+Each SIG must define
+
+  - A well-defined objective of the group (Creation of a report, Development of
+    a functionality, ...)
+  - An expected end-date
+  - Means to achieve the objective, such as regular meetings, a mailing-list, mattermost
+    channel, a workshop, ...
+  - A convener
+
+## Current Special Interest Groups
+
+| Name                        | Start    | est. End | Convener                                       |
+| --------------------------- | -------- | -------- | ---------------------------------------------- |
+| Quality of Service          | Jul-2021 |          |                                                |
+| [Metadata](sig_metadata.md) | Jul-2021 | Dec-2023 | [Rob Barnsley](https://github.com/robbarnsley) |

website/sidebars.json

@@ -83,6 +83,7 @@
                 "project_organisation",
                 "rucio_advisory_board",
                 "component_leads",
+                "special_interest_groups",
                 "about_our_contributors",
                 "contact_us"
             ]