Logging people into Plesk without them seeing/knowing the password

[HostaHost]

Just curious if anyone's come up with a way to log staff into Plesk without them knowing the admin password? I was thinking something in php/curl would be ideal but I haven't had success with that because I have no way of getting the PHPSESSID from the destination server onto the user's computer with the correct cookie domain, and I think Plesk must be IP-specific for it's sessions because if I do the login in php/curl and obtain the resulting PHPSESSID, then redirect the client's browser to the login page with the PHPSESSID as a POST variable or url variable, that just gives them the login screen again.

I'm assuming the psa database's sessions table relies on an underlying php session so I haven't tried just remotely inserting a record in that table with my own generated session id and the user's ip, etc.

Going to cross-post this to the psa10 forum.