Please note that the Rudder control is the same for both MODE 1 and MODE 2 it is the LEFT and RIGHT movement of the LEFT stick
I assume you are a total beginner so I have included the usual different terms for a transmitter above. Some people also call them controllers.
MODE 1= Throttle on Right MODE 2 Throttle on Left.

The Rudder on both MODE 1 and MODE 2 is the left movement of the LEFT stick.

