Add the community and Vocabulary sprint planning meetings

Author: dhruvkb

content/community/community-team/engagement-channels/contents.lr

@@ -28,7 +28,26 @@ We regularly hold meetings to discuss work and, occasionally, to play games.
 Based on your role and the project, you will be invited to some of these
 meetings. You can join the CC Engineering calendar to keep up with the schedule.
 
-<!-- TODO: describe meetings here as they are finalized -->
+### Community meeting
+
+In this meeting, all the staff and open-source community at CC meet to discuss
+work. Any major discussions and ideas that affect the projects or process take
+place in this meeting. It's also a channel to know what is happening in a
+parallel project that you don't get to interact with as much. We have a Show &
+Tell, so if you did or made something recently that you think is interesting,
+you can present that.
+
+**Frequency:** monthly
+
+### Vocabulary sprint planning
+
+In this meeting, the Vocabulary sprint planning meeting is where all members
+involved in Vocabulary meet. This is mainly held to determine reasonable
+milestones on what can be accomplished in the next two weeks and assign
+different tasks and tickets to different people. If you'd like to get involved
+with Vocabulary code you can pick up some tasks here.
+
+**Frequency:** fortnightly
 
 ## Slack