The Payment Methods is one of the most important things you will need to consider when building your Online Store.
WooCommerce allows you to define these features at the initial stages of setting up your store itself.
When you first setup your WooCommerce plugin, you will be able to enable multiple online and offline payment methods.
Payfast comes by default with Woocommerce as a South African payment gateway, however, you are free to install other payment gateways. You will need to setup an account with Payfast if you choose them as there are steps you will need from them to proceed in linking your payment gateway.
Later, you will be able to access the payment settings through WooCommerce > Settings > Payments.
All your installed payment gateways will be displayed in this section. You can enable or disable payment gateways using the i/o button next to each payment method. Also, you can sort the order of display by dragging and dropping according to your preference