How to add more Nodes, Admins, or SSO seats
If you are already on the Pro plan, to increase your Node, Admin, or SSO entitlements:
Go to the Account page
Click Modify Plan
You will see your current subscription level
Adjust the levels to your new needs
Click checkout
The system will figure out any needed credits or proration.
Click Update Subscription to finish to accept the changes
This will charge your card if needed and update your account to the new subscription levels.