How do I make a form ‘read only’?

Right-click on the form. 

 Select  Edit properties ... 

 Select the option  Is closed. 

 

 You may find that the option  Is closed  is not visible after step 2. In that case, click on  More details >>  and go to step 3. 

 Only users with the authorization Allowed to reopen forms may reopen the form.