I've looked into it last real quick last week, but didn't get it to work.
I've tried the following:
But in the log I have following error:
Command failed (Override value is unknown for this keyword.) override RunAs=localuser (action:8088)
I'v also tried RunAsfirstname.lastname@example.org, but same error.. (except that =localuser is changed by email@example.com in the error)
Is there an example available on how to use it?