When Instant Book is activated on an HQ account form, you can use franchise mapping to select which free credit is given to the customer in each child account.
To map which free credit is mapped to the child account, log into your HQ account and go to settings > Mapped Values > Free Credit > Add Free Credit Association.
Enter the Name and begin mapping each child account to the desired credit. When completed, click Save.
Only credits that are $0 with no penalty fees can be mapped.
Advanced Options
When selecting the free credit from Advanced Options in the form, it will prompt you to select the mapped value to sync to the child accounts.