In order to split any receipts we have from a customer, we will go to:
Tools -> Sales and billing -> Split Documents.
From here we will see the list of all the receipts we have, both quotas and subscription ... etc.
We will select in the first column the receipt we want to split and on the top (marked with a red box in the picture below) we can choose the number of fractions in which we want to divide the amount.
Then we will set the date of expiration of each charge and the amount to be paid.
Once we have completed, we will click on the "Process Selected" button at the bottom of the screen.
To verify that they have already been divided we will go to Finance -> Sales and listings -> Receipts.
From here we can verify that all the fractions in which we have divided the previous receipt.
If you would like more information about how to Fraction Receipts manually.