A neural processing unit comprises an input module for receiving a transaction from at least one program, each program has an associated program privilege level; and a plurality of delegation pages, each delegation page comprising a delegation management unit associated with a page privilege level. The neural processing unit also comprises at least one resource arranged to be accessed by at least one of the delegation pages; and a processing module arranged to process the transaction. Processing the transactions comprises allocating each transaction to a delegation page based on the program privilege level and page privilege level. The program is arranged to instruct the delegation management unit of a first delegation page, having a first-page privilege level to delegate access to the at least one resource to a second delegation page having a second-page privilege level, and wherein the first-page privilege level is higher than the second-page privilege level.