«Payment services» is a list of payment providers (online acquiring) through which customers pay for orders by card right on the site. Here you turn on the services you need and choose the main one.
What you see
A provider table opens with the columns: «ID», «Provider key» (a technical name, for example liqpay, wayforpay, fondy, monobank), «Name» (the service name — LiqPay, WayForPay, Fondy, MonoBank), «Primary» (a toggle for the main payment method) and «On/Off» (enabling the provider). The «Actions» column has edit and delete buttons. At the top there is a «+ Create» button, search and a column settings menu.

How it works
Click «+ Create» or open a provider for editing to enter the access keys from the payment system account. The «On/Off» toggle enables the provider, and «Primary» marks the service offered to the customer by default.
Why it matters
Online card payment is convenient for the customer and increases the share of prepaid orders. The more convenient payment methods there are, the fewer drop-offs at the checkout stage, and the money arrives in your account right away, without waiting for cash on delivery.