How can I make the email address a required information when adding customers at the POS?

Here's the step-by-step guide

1. ​In your POS, Click the "Gear" Icon settings in the Upper right.
    
2. In General, Choose the "Customers"
    
3. Click the "Gear" Icon in Customer Settings
    
4. Find the "Email" in the Field name and Tick the 2 boxes to Enabled & Required Email when creating/Editing customers at the POS then save