In order to add features the user selects can select a feature from the related the available in the list by clicking on the checkbox
In order to remove features user unselects a feature from the related a user can un-select it by clicking on the checkbox
The standard features cannot be un-selected since they are inherited from the model tree.
can't be unselected. In order to save any changes the user selects 
button.
All features are available in features grid list.
User must assign the business case 12130 to Add Features.
To add or remove features is controlled by a business case that the user must have in his role.
More information on how to add More information on adding or remove features can be found on the following in this page: → Add Feature