Help with trigger servo

Hello good afternoon.
I was looking for ways to make servo trigger (SG90) via software, and I couldn’t find many results, I know it’s not very common, but could someone help me with this please?
I currently use drones with LED board, would I be able to replace the LED with a servo?
I’ve tried enabling the servo through the parameter list, however, the servo doesn’t respond when I inject “High” via MissionPlanner.
I’ve seen several videos explaining how to drive using the RC, however, I wanted to do it without using the RC, commanding only remotely as well as the LEDs.
I appreciate all kinds of help, hugs!

Video about this;