As of now it’s 7, but it’s up to you to keep track as the system will not stop you. If you are logged into a register, you can hit ‘custom reports’ to view how many you’ve marked out if you lose track.

It used to be max 7 during the week, and could be used whenever. Now it's still 7, but you're only allowed to mark it out from 30 minutes before a scheduled shift to 30 minutes after. Besides that, or on off days, you have to pay for it. Same for drinks. You can use bean markouts whenever, though, just once per week.

See other comments for more details.

edit: RIP just realized someone already posted this, my b

POS doesnt prevent you from marking out more but your SM might notice and correct you. theres a way on the POS to check how many markouts youve used, just make sure youre assigned and its under functions and its one of the reports options i cant remember what one off the top of my head

7, i usually mark out the remaining amount on my last work day of the week.