Assuming guest is required, the following 2 results were found.
applies to the user you are running Regedit as! (So if logged in as Admin, this hides it from the Admin, but not from the Guest account) To only restrict Guest or a Specific User: So undo the above if you didn't want this applied to the current...
cog icon in the top right corner Navigate to the appropriate workspace Click on Registration Form Configure the field for Guest Users Hover over "Name" and click on the pencil icon to edit this Alongside "Field Type", select "First Name, Last Name" Now...