Need to give the tenant rent credit or discounted rent?
On your RentRedi dashboard, click the "Properties" tab
Select the unit (where you need to update the charge)
Click the "Charges" tab
Click the upcoming charge you want to change
Edit the amount to be whatever you'd like (For example, if you're giving a $50 credit off $1000 rent, then input $950 as the new rent for that month).