Set up tariff plans in your server panel (e.g. "Service Plan" in Plesk; "Package" in cPanel);
Go to "My Licenses", click to the "Manage" of the required brand;
On the "Edit Plans" tab, configure the required number of plans and their capabilities;
In the "Relate with these hosting plans" input field, enter the names of the tariff plans from your server panel. Double-check if you entered correct plan name(s);
Select the "Default" plan, it will be assigned to those users who do not belong to any of the other configured plans;
A plan for which "Relate with these hosting plans" is empty is ignored unless it is selected as "Default";
Click "Apply".