How to insert a check box that can be checked electronically in Word To include a check box that can be checked electronically within your word document, you must first ensure that the Developer tab is displayed. 1. Display the developer tab 2.ow to insert a check box that can be checked electronically in Word To include a check box that can be checked electronically within your word document, you must first ensure that the Developer tab is displayed. 1. Display the developer tab 2.