Wheels click because the spokes are unwinding after the wheel has been made and not properly de-stressed.
I don't know how the builders do it but what I have done in the past is with a tyre on bash it on the ground at an angle. Or, put the rim on three blocks so the axle is off the ground and then somehow put pressure on the axle.
The idea is to reduce the tension on the spoke nipples so they are allowed to move.
I always do this after building a wheel and in one case where I bought a pair of wheels from a 'good' builder I had to de-stress them and they where bl..dy useless afterwards.
So, make sure you have a spoke key handy
"advertise an expensive purchase loudly".
Not worth feeding the troll buddy