The control on the drivers door controls all mirrors.
There are 4 marks around the central knob at roughly 11 and 1 o’clock, these control the passenger and driver top mirror respectively and the marks at 8 and 4 o’clock control the lower mirrors – Turn the knob to align with the mirror that you wish to adjust.
You will find that the knob itself pivots up & down and side to side and it is this action that controls movement to the mirror selected at the appropriate mark.
The ignition has to be on.
Hope my explanation and your ‘playtime’ gets you there
Fred