Job Entry - Assembly Fields 8.03.409

We're trying to add some custom fields to the Job Entry module for each Assembly. I can add fields on the Subassemblies panel but they only pertain to assemblies > 0. I can't get to the 0 (zero) assembly however I try. I tried adding an additional panel with a UltraComboPlus box tied to the JobAsmbl.AssemblySeq field but it only allows you to select assemblies greater than 0.

I looked at the Assembly panel but it's data fields are tied to the CurrAsy table which, I assume, is just a temporary table. I even placed the JobAsmbl.AssemblySeq field on the Assembly panel but it still won't show the zero assembly.

Any ideas on how I can add a panel that will allow the user to select any assembly related to the job that was selected?