How do I add a payment gateway in FreshBooks?

If you are a business owner who uses FreshBooks to manage your finances, you may want to know how to add a payment gateway in FreshBooks in order to accept payments from customers. This could be beneficial for businesses that need to accept payments online, as it would allow customers to pay quickly and securely. Additionally, having a payment gateway integrated with FreshBooks would make it easier to track payments and manage customer accounts.