Before fitting the dial and hands, a check is made for chrono creep which is when the hour recorder turns even when the chronograph is off. The chronograph is worked some times and usually a spare hand would be fitted to the hour recorder but in this case, the wheel already has a convenient scribed mark (in red). The watch is left running with the chrono off for 24 hours to see if there is any rotation of this wheel.
All is fine with that so, the hour wheel and dial washer are fitted.
And then the dial and hands. It appears the chrono second hand is not exactly aligned but that is just a slight angle on the photograph.
The movement ring is re-fitted and the movement is ready to be re-cased.