Select CC like SelectRequestors


I’ve got a request from a co-worker. He wants a dropdown list instead of
the cc-field in the same fashion you can select the requestor (by
implementing SelectRequestors). I could try to rewrite this codesnipplet
so you can select an existing requestor you want to cc. But then I only
can select one value. Has anybody tried the same and want to share his
thoughts and/or code ?

With kind regards,

Jasper van der Marel
Linux System Administrator
Dutch Council For Refugees