Buy more licenses
Click your profile picture in the top right corner and choose Manage Subscription.
Click Buy More at the bottom right.
Enter how many licenses you want in total, then click Continue to billing details.
Enter your payment and billing details if you haven't before, then click Confirm Payment. A confirmation screen shows your purchase went through.
Assign a license to a teammate
Click your profile picture and choose Manage Users.
Enter the teammate's email address and click the + button.
Click Apply Changes. The license is assigned and your teammate gets an email invitation to gantterAi™. They can sign in, or register if they're new.
To give someone admin rights, see How to Make Team Members an Admin.