It's a simple process if you have punch card memberships in an old software that you need to transfer over and update punches left to correspond to that old software.
Step 1 - Click "Add Membership" on person's account
Step 2 - Locate the punch card membership and assign for free. They've already paid for it in your old software, so no need to set-up payment.
Step 3 - Update amount of punches left in any of the tracks to correspond with how many punches should be left from the old system
Step 4 - Adjust expiration date if necessary
Done.