If your business uses membership levels and you would like to boost a guest's membership level manually, you'll need to manually gift that guest points until they reach the threshold to trigger the next level.
Membership Level A = 150 points
Membership Level B = 500 points
If the guest currently has 150 points then they will fall under the membership level A. In order to move the guest to Level B, you will need to gift the guest 350 points manually.
Please refer to the article below for instructions regarding the manual gifting of points to a guest.