Customize the outlook ribbon

Get to the Customize the Ribbon window

1. Click the File tab.
2. Under Help, click Options.
3. Click Customize Ribbon.

 TIP    You can also get to the Customize the Ribbon window, by right-clicking any tab on the ribbon, and then clicking Customize the Ribbon.

http://office.microsoft.com/en-za/outlook-help/customize-the-ribbon-HA010355697.aspx