Adding some contant

Signed-off-by: Gergely Csatari <[email protected]>
Co-authored-by: Timo Perälä <[email protected]>

content/en/docs/guides/contributor-guides/how-to-engage.md

@@ -5,14 +5,57 @@ description: >
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-## Community meetings and celendar
+## Structure
+
+The Nephio community is organised into different Special Interrest Groups (SIG) and the technical work is overseed by
+the Technical Steering Committee (TSC).
+
+SIGs are organized around specific technical issues. 
+
+* SIG1 - Network Architecture
+* SIG2 - Automation
+* SIG3 - Relase
+* SIG4 - Security 
+
+
+## Community meetings and calendar
+
+Nephio community have several different meetings. The TSC and SIGs have their regular meetings plus some topics are
+discussed in their own regular calls. All the meetings of the Nephio community are listed in the
+[community calendar](https://lists.nephio.org/g/main/calendar?consolidated=1).
+
+All the meetings in the calendar are open for everyone, there is not need for membership, no need to be a contributor of
+the project to call in and share one's opinion.  
 
 ## Wiki
 
-### SIG Group Wikipages
+[Wiki](https://lf-nephio.atlassian.net/wiki/spaces/HOME/overview?mode=global) is used to share information about the
+operations of the project. There are no strict rules for what kind of information is stored in the wiki. Some teams
+store all their meeting minutes in the wiki, but others use Google Docs for the same reason. 
+
+The wiki collects all these references.
+
+All wiki pages can be seen without logging in to the wiki, but to edit or create pages a login is needed.
+
+### SIG Wikipages
+
+Each SIG has its own wiki page:
+
+* [SIG1 - Network Architecture](https://lf-nephio.atlassian.net/wiki/display/HOME/SIG+Network+Architecture)
+* [SIG2 - Automation](https://lf-nephio.atlassian.net/wiki/display/HOME/SIG+Automation)
+* [SIG3 - Relase](https://lf-nephio.atlassian.net/wiki/display/HOME/SIG+Release)
+* [SIG4 - Security](https://lf-nephio.atlassian.net/wiki/display/HOME/SIG+Security)
+
+These wiki pages contain references to the calendars, meeting notes, YouTube playlists and working groups os the SIG.
 
 ## Slack
 
+Day to day communication happens on Slack, community members discuss technical topics and other project related issues
+there. Both TSC and all the SIGs have their separate channels but there are topic specific channels. To get the list of
+available channels you can get to the list of all channels by clicking *Channels -> Manage -> Browse channels*.
+
+Invite link to Slack is [here](https://nephio.slack.com/?redir=%2Farchives%2FC03L6QB27DM%3Fname%3DC03L6QB27DM).
+
 ## GitHub repos
 
 ## Mailing lists