There are two types of features that can be attached to a vehicle in the inventory. The standard features and the special features.
The standard features cannot be altered or deleted since they are inherited from the model tree.
In order to add special features, the user selects can select a feature from the related checkbox the available in the list by clicking on the checkbox.
In order to remove features user unselects a feature from the related special feature a user can un-select it by clicking on the checkbox
The standard features 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.
The ability to add or remove features is controlled by a business case that is configured in a BP's 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