The Extra Packages function enables you to sell users the sets of predefined resources for which you can assign prices and bill users in the gross.
Extra Packs are assigned for group of plans. Prior to creating an Extra Package, make sure there is at least one plan group.
To create an Extra Package:
The package will appear available for users signed up for the plans of this group.
If user wants to buy more resources than the package includes, the prices of the plan he signed up for will be in effect.
Now, that a package is created, you can edit package name, prices and resources for the whole plan and set specific package prices for each plan under group.
Go to Plans -> Extra Packages -> Available Extra Packages.
Important: extra package used by at least one account cannot be deleted.