I wrote about the importance in designing with a representative from the sponsor (here), yet maintaining adequate direct contact with the sponsor (here). My thought on co-designing is sharpened by my recent experience in running a team development workshop in Shenyang China. The representative is preferably one of the participants. Not (just) the sponsor’s business planning manager or executive assistant or HR / Training Department coordinator, but someone on the receiving end of the intervention. First, the latter is equally (if not more informed) of what design would be more appropriate. Second, working with a participant will simply put a better linkage between design thought and evaluation. Lastly, if there is learning element in the workshop, the co-designer can start his / her learning earlier during the design process.