Once you are on the Teams tab:
Click the orange "+ Create Team" button to open the Team creation window. Or if you have already created a team, click the orange "+ Add New Team" button.
Enter a name for your team - e.g. "Radio Promo", "Artist Management" or "Internal Team".
Then, enter the names or email addresses of all those you want to add to your team. Click the name or hit TAB to add it to the field and continue adding others.
Select the Orange "Save" button when complet
This will create your team which you can view and manage on the Team Planning dashboard.