Members and Team List
Team List gives you an overview of everyone on the team - who's active, who's away, and what roles they hold - without having to open Discord.
Members
Under Mitglieder (Members) you can see everyone who has been added to the team, along with their assigned roles. Someone with manage_members can remove a member from the team here - this only removes them from Team-Panel, it does not kick them from Discord.
Adding members generally happens automatically: the first time someone from your Discord server logs into the panel, they show up here (assuming the bot is present and the team exists).
Team List
The Team List view combines member data with whatever is relevant elsewhere in the panel - for example, if Absences is enabled, you'll see who's currently marked as away right in this list, so you don't have to check two different places before assigning someone a task.