How to Set Page Margins for Different Types of Documents

Adujst your Microsoft Word page margins in 3 different ways for 3 different types of Word documents!

[@MikesOffice]

Which of the three ways to adjust page margins would you use most frequently?

[@himanshuprasad5282]

Thanks for the video.
I use custom margins

[@MikesOffice]

Nice! What do you use them for?

[@kiwi_2k5]

the second method is not working, what should i do?