Schedule a meeting on Teams
Step 1 - Click on the calendar icon in the left bar of Teams and then click on New meeting in the top right corner
Step 2 - Give your meeting a meaningful title
Step 3 - Add required attendees in one of two ways:
Option A - Type each persons name individually and add them one at a time
Option B - Leave the attendees black and use the Add channel option to meet "in a channel". This will automatically invite everyone in that team/channel to the meeting and make sure all the chat and files shared are also available to the team after the meeting
Step 4 - Set the time, date and optional repeat for the meeting
Step 5 - Give the meeting a nice description. This could be the agenda for the meeting or instructions for attendees. Everyone in the meeting will see this before, during and after the meeting.
Step 6 - Click Save, it should now show up in your calendar.
Note that at busy times it might take a couple of minutes for everyone to receive the invite and for the meeting to be confirmed. During that time the meeting will be greyed out in your calendar.