Setting the timer to the throttle for a specific model is the most confusing
operation on the 7CAP transmitters. Assuming that my 72mhz transmitter
works the same as yours I will try to spell out the procedure.

Select the desired model and go to Timer function. Cursor to INH and dial it
to OFF. I set the throttle to 3 clicks up as the start point for the timer.

Cursor to the time and set the minutes and seconds desired. Set mode to
UP and use the dial to set SW to 3 and the up arrow. Cursor to SW and
press the dial. Then END.