Litchi, calibrate compass, how ? Instructions please for a deaf person.

[Yorkshire_Pud]

From what I have read it seems there may be verbal instructions issued but if there are I can not hear them, I am deaf.
When I touch the message I do not see anything happen. I ended up having to switch to Go4 and calibrate it there, then switch back to Litchi for the flight.
Can someone walk me, step by step through the procedure in Litchi please ?

 

[Meta4]

From what I have read it seems there may be verbal instructions issued but if there are I can not hear them, I am deaf.
When I touch the message I do not see anything happen. I ended up having to switch to Go4 and calibrate it there, then switch back to Litchi for the flight.
Can someone walk me, step by step through the procedure in Litchi please ?

There's never any need to recalibrate the compass unless you modify the drone.
Is there any reason you are wanting to calibrate the compass?