To get to the Set Up and Manage Online Payments page, click the "gear icon" at the top right of the screen.
Then click on the "Set Up and Manage Online Payments" tab.
If you have not set up your Stripe account or Paypal you will see the options to do so on this page.
For Stripe, click the "Connect with Stripe" button and fill out the required information.
For Paypal, click the "Enable Paypal" button and enter your email address.
You can also choose your settings for the fees associated with each.
For Stripe, you can add no fees, exactly what Stripe charges, or a flat fee.
If you add what Stripe charges or a flat fee, this amount will be added to an invoice when your customers pay online.
For Paypal, you can choose from no fee or a flat fee.
This will be added to any invoice your customer pays with Paypal.
If you have set up Stripe and Paypal, you will see the options to disconnect Stripe and Disable or edit Paypal.
This is also the page where you can setup Auto-Charge settings, these are found towards the bottom of the same page.