Navigate to the left-hand sidebar and click on 'Admin'

Select 'Online Signup' from the Admin menu

Click on the 'Signup Pages' tab

At the top of this page, it will say 'Available at https://yourpractice.hint.com/signup which will redirect to..' and there will be a drop-down menu. This is what defines your default membership plan and which plan your generic signup link goes to

Select the drop-down menu and pick which plan you would like to set as the default