Failsafe should be set immediately after you finish building your miniquad. Failsafe will determine what stick position will be used when your receiver stops receiving information from the transmitter, or when the connection is lost. Setting up frsky failsafe is very straight forward and should take less than a second.
Turn on your Frsky Taranis and power on your receiver (by plugging in the battery to your miniquad).
Set the sticks position on your transmitter to how you would like them to be in failsafe. A good practice for miniquads will be to center the pitch, roll and yaw and lower the throttle to 0. If there is a buzzer installed it would be good to set the buzzer switch to on (this way your buzzer will start buzzing on failsafe).
Once all sticks and switches are in the desired location, click the small F/S button on the receiver. There is no need to hold the button pressed, just click it once and you are done.
To test the failsafe, take off your props, arm your miniquad and give it a bit of throttle. Now, power off your transmitter. The motors will stop turning and your buzzer will start buzzing (If you set your throttle to 0 and your buzzer switch to the “buzz” possition).