And I'll add that a watch designed to require adjustment only once a year is more than up to running continuously. I'm not 100% certain, but frequent setting using the stylus may even create more premature wear than if the 5146 is left running as intended.
To answer the OP question directly, setting the AC isn't rocket science. Just remember to ALWAYS set the time to 6am BEFORE making any other adjustments and you'll be fine.