We do not implement PMDG777. This plane have his own interface not same as PMDG 737-800 NGX
This kind of planes using customized Autopilot and sometimes also trim.
That means… the yoke does not move when autopilot is on, but all the rest works
For now there is no plan to direct support PMDG777
Implementation of such kind of planes takes about 1-2 weeks programming