My guess is that they also want any replies or comments to go to the other person. When I was in internal com, we created a generic user in our system ( LDAP). A number of us could login as that user and post content.
There is one idea along these lines, but not the same: Allow admins the ability to login 'On Behalf Of' other users
Other similar ideas that might go more to your use case are here: Admin ability to Switch User / Post as another user, Overriding the author of a post
Based on a focus group we were recently a part of, I know this is a concept that has gained traction at Jive, but will still be a while before it gets implemented.
Thank Tracy, you rock! I appreciate the help, when I did a search on delegation I didn't find anything. Good to know I am not the only one!