You'll have 2 options. You can change:
The regular amount you pay every month, or
Pay a different amount for just this month (your coming deposit)
Where to find each option
Changing your regular amount
To change the regular amount you every month:
Open the app and go to the Plan tab.
Scroll to Update Plan for next month
Adjust the amount
Save changes
If you update your monthly payment, the new amount applies to all future collections. Your next scheduled collection will use the updated amount.
Paying a different amount just this month
If you'd like to pay more or less for one month only, you can set a one-time override:
Open the app and go to the Plan tab.
Click 'This month'
This will be the middle button of the 3 middle options
Adjust the amount
Save changes
Your regular amount will automatically resume the following month, so you don't need to change it back.
This is useful if you have some extra money this month, or if things are a bit tighter than usual.