[db-wg] ALLOCATED-ASSIGNED PA with another org than the LIR's org itself ?

Dear all, I am trying to make my first ALLOCATED-ASSIGNED PA block for one of my end user. It seems that I cannot change the org: line, as it's also the same inetnum than my own LIR. Is there any way to be able to associate another org object to the whole inetnum, without loosing the link with the parent LIR of that block ? Thanks in advance for your help ! Kind regards, Clément Cavadore