You are quite welcome, Mannixman.

You will find that the setup room actually works fine for things without groups, as your aircraft will do. I would export and import into Poser any part of the aircraft as a separate obj that you want to have move, such as the ailerons, rudder and elevators - and even retractable landing gear.

You would import the bulk of the non-articulate part of the aircraft first, then parent the other bits to it, with inherit bends of parent ticked. Then, I would open the joint editor and adjust the axis of movement for each part so the rudder pivots on the y-axis, with the pivotal section the bit closest to the vertical tail stabilizer. Easy enough to do, and a cool effect, too. You can even set limits how far the rudder and ailerons and all that will turn.

Have fun with it, mate...

Monterey/Mint21.x/Win10 - Blender3.x - PP11.3(cm) - Musescore3.6.2

Wir sind gewohnt, daß die Menschen verhöhnen was sie nicht verstehen
[it is clear that humans have contempt for that which they do not understand] 

Metaphor of Chooks