Answer:
Look under Outlook options in the Backstage view
Step-by-step explanation:
If we want to add more commands in Outlook, we must look under Outlook options in the backstage view.
Then we must click in the option customize ribbon, we are going to see all the commands that we can add.
For example:
We have an option to do a filter in customize ribbon area, we can see the most popular commands or all of them.
We want to add the command New contact, we can choose where to add it, if we make a mistake, we can remove the command.