Check the amount that is currently in the tenant wallet by clicking their profile.
Add a credit of the difference between the rent amount and the tenant wallet amount. For example, if rent is $1000 and the tenant has $800, add a $200 credit.
The rental amount will now be $800, and will be paid by the available funds in the tenant's wallet.
Increase the next rental amount to capture the shortfall. You can do this in one payment or perhaps allow the tenant a few periods to catch up. For example, If I added a credit of $200 on a $1000 payment, the next payment will be $1200.
Finally, schedule the rent to go back to the normal level. You can add multiple rent adjustments so once you have added the first to claim the shortfall, you can add a second adjustment to return the rent to the normal level.