What versions of PowerDraft V8 support User Command Macros (UCMs)?
Bentley Systems declared UCMs obsolete many years ago. Neither MicroStation CONNECT nor PowerDraft CONNECT supports UCMs. Visual Basic for Applications (VBA) is a better way to create equivalent functionality.
Tried on v8 2004 PD doesn't support UCM so it may never have support. But it has UCM2BAS.MA converter app so some support is there. Not sure which module in Microstation acts as UCM interpreter but seems ustation.rsc contains the commands and Powerdraft is missing it while other Power products has it but UCM interpreter also is missing.