Quabbly's plans are charged per user. If you are on Quabbly’s Free plan, you can not add users to your workspace.

If you are on the Standard paid plan, you can add up to 50 users to your workspace and if you are on the Premium paid plan, you can add up to 100 users to your workspace.

Once you reach your user limit, you can either remove some users to add others or upgrade to a higher plan.