Configuring Ownership for Object Types
To define ownership groups, add security groups to the Ownership tab. If no ownership groups are associated with the entity, the entity is treated as global and any user who can edit an object type can edit, copy, or delete this object type.
If a security group is disabled or loses the ability to edit object types, its members also can no longer edit an object type. For more information on access grants, see the Security Model Guide and Reference.