For end users, I prefer having the 2nd menu (main menu) enabled by default. This is the one with the icons. It makes it a lot easier for people to learn their way around PIA and still have the left menu for quick navigation.
How to change PeopleSoft PIA
Below are instructions on how to change the global default in PIA. This example is done in PT8.51+. Example shown in picture below.
Main Menu > PeopleTools > Portal > Structure and Content > Portal Objects > HomePage > Tabs
Then click on “Edit” next to My Page.
Click on the Tab that says “Tab Content.”
Under PeopleSoft Applications, we change Main Menu to “Opt-Dflt” and Menu to “Required.” Then hit Save. This will make the left hand menu always be required and the one with icons on the right show up by default, but can optionally be turned off by the end user.
Now go over to the Tab Layout Tab. I prefer two columns. This way it fills the browser window. Select 2 Columns and hit save.
Now every user will have this as their default setting when they first login to PIA.