Switching from the single provider / user plan to the multi-provider / multi-user plan is as simple as adding another user to your account.
Switching to multi-provider plan
To add another user, go to Settings > Users and click the Add User link.
You will receive a notification letting you know that you will be moving to the Multi-Provider plan. Click OK to agree to the switch.
The next time your account auto-renews the subscription, it will be at the higher rate.
Moving back to single provider plan
Switching back to the single provider / user plan requires you removing all other users on the account.
To remove users, go to Settings > Users. Click Edit next to a user account you'd like to remove.
Scroll down to the bottom of the user details page. Click Delete User to remove the user from your account.
In the new dialog, click Confirm to delete the user.
Repeat the process until you have the one original user left on the account.
The next time your account auto-renews the subscription, it will be at the lower rate.
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