Evergreen has different levels of holds. Library staff can place holds at all levels, while patrons can only place title-level holds, and parts-level holds. The chart below summarizes the levels of holds.
Hold level  | Abbreviation  | When to use  | How to use  | Who can use  | Hold tied to  | 
Title  | T  | Patron wants first available copy of a title  | Staff or patron click on Place Hold next to title.  | Patron or staff  | Holdings attached to a single MARC (title) record  | 
Parts  | P  | Patron wants a particular part of title (e.g. volume or disk number)  | Staff or patron selects part on the create/edit hold screen when setting holds notification options.  | Patron or staff  | Holdings with identical parts attached to a single MARC (title) record.  | 
Volume  | V  | Patron or staff want any title associated with a particular call number  | In the staff client, click on Volume Hold under Holdable?  | Staff only  | Holdings attached to a single call number (volume)  | 
Copy  | C  | Patron or staff want a specific copy of an item  | In the staff client, click on Copy Hold under Holdable?  | Staff only  | A specific copy (barcode)  |