If you wish to add other Payment options such as Cheque or Food vouchers you will need to create the Accounting Category or decide on which existing one to use.
Then head to:
Settings > Property > Accounting Configuration
Tick which payment methods should be available to use:
In France, the Unspecified external payment type is considered kind of a tax fraud, hence this option is unavailable for selection for French properties.
Scroll down to External payments
You can add the various supported options by selecting the correct Accounting configuration from the drop-down list.
The payment option will be available to add in the Billing screen in External payments > Type