You may run into a situation where a check-in didn't work as planned. No problem! You can add / subtract points from a user's account at any time. Navigate to the admin panel > Users > Search for a user (by e-mail) > Activity.
Click the + Add Adjustment button, make sure you have selected the correct user.
If you are adding a missed check-in, change the Type to Task / Check-in, select the appropriate task, and choose the restaurant location.
If you simply want to adjust points, select Points Adjustment and add/subtract points as needed.
Note that if you are adding points for a missed check-in, it is more appropriate to create a Check-in adjustment because this will count towards the minimum check-in requirement and update restaurant statistics appropriately.