Each added payment will generate an accounting entry in the journal and will be added to the list of payments and collections of the corresponding bank account or gateway . In case of fraction of payments, the same invoice can have as many charges as you need.
Select your purchase from the listing
In the view that opens, click the Add Payment
Check that the data about Amount and Date are correct
From the Dropdown Menu, select the appropriate payment method
By selecting the magnifying glass icon you will be able to search for registered payments from the same contact and link them if necessary.