The job bans daytrading? Bonus! We don't know WTF you are doing, that a job you might take at 900K per year bans daytrading! AHHAHA! Hoodwinked we have been! Well, that was an hour wasted.
They disallow taking profit on trades before a specific time has passed because they don't want active trading. This is common in certain financial companies, I'll let you figure out which kind.