Open the app or bbva.es and choose your card.
Go to the App or to bbva.es and select your card.
Choose "transactions" on the website or "show" in the app.
Select "transactions" if doing so via the website, or "show more" if using the app.
Select "Change payment method".
Select "Change payment method".
And select the monthly amount to pay.
And choose the amount or percentage you want to pay each month.