Connection servo motor with flight controller

Dear Sir,
We are using pixhawk 2.4.8 flight controller in our Quadcopter. We are facing an issue with the connection of a servo motor with the flight controller. Can you please suggest some methods to overcome this issue.

This is straight forward with a few considerations. See here: Servos

We followed all the mentioned process from here but we didn’t get the results. Suggest few other methods so that we can operate servo motor .

Are you powering the servo directly? The output rail is not powered. Do you have the servo on an output that doesn’t share a timer with the motors? Have you set the servox_function for the inout chan you have mixed on your Transmitter?