Use this tutorial to add members to a team, only Teams 'Owners' have permission to manage and add members.
Type and Select the members you wish to add, then click 'Add'.
You can change the members permissions during this screen.
A message will appear in the general chat and you will be able to view the member and their permissions under 'Manage Teams'.
Related articles appear here based on the labels you select. Click to edit the macro and add or change labels.