Click 'Settings > Payment screen'. Here you can change the settings related to checkout.

'Columns for payment methods' you can set the number of columns for the payment methods that will be shown in the payment screen
'Payment list font size' you can set the font size of the payment methods
'After splitted order payment to go' you choose what should happen after an order is split. With 'Order' the app returns to the order so you can checkout the rest of the order or split it. With 'Facilities list' the app returns to the facilities screen
'Go back to facilities screen' using this it is possible to give the option that after direct sales you can return to the facilities screen instead of staying in direct sales

Payment screen