To apply a payment, access the loan account by clicking

in the top navigational pane shown below:

This will render the table below with all disbursed loans.

Click on a loan in the table to display the details.

From this display click the

button from the options at the top right of this screen

Or from the

tab as highlighted below

This will render the popup below

Enter the payment details then click

The payments table and progress bar will be updated accordingly.