Customizing the Global Navigation Bar
Individuals have the ability to customize the top Global Navigation menu to fit their personal needs and uses. Workfront has made it so users can configure the top navigation bar to only display the options they need and determine what appears when they login.

Navigate to My Settings and select Preferences. Then locate "When I Login'.

This allows a user to choose a default login page for Workfront. 

Select Save Changes when done. 
*A user's ability to modify My Settings will depend on Access rights.