So far, you’ve seen how to use rules to add validation to fields, such as the Email field. Now you learn how to work with the formatting option in rules to modify the visibility of form fields based on user selection. Perform the following steps to add a new rule to the Laptop Loan Request form.
1. Click the repeating section on the form to select the entire section (you should see handles surrounding the section, identified by small square symbols—this lets you know you’ve selected the repeating section rather than the table you inserted inside the section).
2. Click the ribbon’s Home tab and then click the Manage Rules command.
First, you create a rule to check if the laptop selection is blank ...