OrderPort allows you to configure when the app asks for a tip in the Point of Sale credit checkout process. This setting is configured in OrderPort Admin -> Services -> Point of Sale -> Settings.
The setting is called "Contactless Checkout Enabled". Please note that this setting does not change anything regarding tap pay. It only configures the checkout workflow.

When enabled, the following workflow will be used: Checkout Page -> Tip Screen -> Payment -> Completion.
When disabled, the following workflow will be used: Checkout Page -> Payment Tip Screen -> Completion.
Please note: When disabled, the payment processor will be called twice, once for the initial payment, and a second time in order to add the tip charge. There are additional risks that come with this. To learn more about them, please see the Backend POS Payment Processing Details document.
If you update the setting, make sure to save the change. You will need to close and reopen your OrderPort Point of Sale app for the change to take effect.
For a video demonstration of the different workflows, please see this OrderPort University lesson: Contactless Checkout Setting – OrderPort University.