Step 1: Show the Developer tab on the ribbon
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              Right click on any of the ribbon commands. For example, right click on Home and then click Customize the Ribbon. Open Customize the Ribbon dialog 
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              Select Developer on the Main Tabs box and click OK. 
Step 2: Lock or unlock the form
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              On the Developer tab, click Restrict Editing command. Where is it? 
 
                         
				 
				