Limiting daytrading is not about 'making both owners happy'. It is about preventing the accumulation of excessive profits by trading teams.
Can you explain excessive profits to Americans, like me... :-)
You have to use your judgement on that.
Right now, just about anything is excessive, ,since there is no real trade-off -- trading doesn't harm your team in any way.
"I don't know half of you half as well as I should like; and I like less than half of you half as well as you deserve."