You can set the Troll up to automatically send your RST to your Ally. This is of course unless it is a "No Ally" game or if you want to send it to more allies then allowed in a limited ally game. (ie One ally only game)
To have the troll do this go to the respective game score page and click "Other Game Options"
Choose "Setup Alliance" in the grey block at the bottom of the small window
Then fill in the details.
If you know all this and I misunderstood your question then please disregard
Of course if you choose to forward your turns to an ally yourself manually then this works also as long as the game does not prohibit the said ally in the game description.
I hope this helps.