This can be done via the Business Dashboard using the Settings.
Follow the steps given below:
1. Select Settings from the dashboard navigation.
2. Scroll down to the Online Ordering section.
3. Go to Ordering Basics and scroll to the Dine-in section.
4. Here you can use the toggle button to activate or deactivate Dine-in for your Thrive restaurant site. Further, please select the type as Table Ordering to enable the same.
5. Click Save Changes once you've completed the edits.
6. Please ensure you set up the Table Configuration for your restaurant. Read instructions here.