From your online bank:

1. Click Pay in the left menu. 
2. Click Add a bill. 
3. Enter the supplier in the search bar and follow the instructions.

Check out the demo

From the app:

1. Click on the left menu.
2. Click Transfers and payments and select Manage payees.
3. Click Add a payee at the bottom of the screen.

Follow the instructions.

Check out the demo