In Alma a location must be assigned to a Fulfillment Unit. Alma uses this as a way of grouping locations so that loan rules can be set for all those locations in one place. This presumes however that the loan rules are the same for all the items at all those locations for all libraries (what Ex Libris call "location-based borrowing"). Unfortunately we don't have this in Cambridge but we still have to allocate a location to a fulfillment unit so we have some broad guidelines on which fulfillment unit a location is allocated to.
Open Stacks, or Open Stacks 2, or Open Stacks 3: locations are allocated to this fulfillment unit when some (but not necessarily all) of the items stored at that location can be physically accessed from the shelf by the user and can be removed/borrowed from the Library.
Limited: locations are allocated to this fulfillment unit when all of the items stored at that location can be physically accessed from the shelf by the user but cannot be removed/borrowed from the Library, e.g. Reference Shelf items.
Short Loan: locations are allocated to this fulfillment unit when all of the items stored at that location are issued for 1 or 4 days.
Media: locations are allocated to this fulfillment unit when all of the items stored at that location are physical A/V materials such as DVDs, CDs, videos, microfilms, as well as physical materials like locker keys and bookrests, but NOT online resources.
Closed Stacks, or Closed Stacks 2 or Closed Stacks 3: locations are allocated to this fulfillment unit when all of the items stored at that location cannot be physically accessed from the shelf by the user and that they have to ask to be fetched but can be removed/borrowed from the Library.
Closed Stacks - No Requests: locations are allocated to this fulfillment unit when all of the items stored at that location cannot be physically accessed from the shelf by the user and that they have to ask to be fetched but cannot be removed/borrowed from the Library (in the UL this fulfillment unit is used for locations where all of the items stored at that location cannot be physically accessed from the shelf by the user and that they cannot ask to be fetched and cannot be removed/borrowed from the Library)