Setup Product Group Features
Adding product group features allows some newer order form templates to display features that relate to all the products within the group.
Navigate to Setup > Products/Services > Products/Services
Click the Edit icon next to the product group you wish to edit.
In the Group Features section, enter the feature into the text field and click Add New
Repeat the process for each group feature you wish to add
Click Save Changes
For more information on Product Groups please refer to http://docs.whmcs.com/Product_Groups