Making questions required
Any question can be marked as required in the page builder. This means that a customer will have to answer it to proceed to the next page of your form.
To mark a question as required:
In the preview of the page, click on the question to be marked as required.
The question will become highlighted, and the settings pane will open on the left hand side, populated with this question's settings.
In the settings pane, toggle Required to the on position (green).
Click Update Question. The setting pane will close, and the question preview will update to show that the question is required.