OM Infotypes (PO13)

Hi Experts,

In the Expert Mode (PO13),

What is the use of tabs Like (Active, Planned, Submitted ,Approved, Rejected). How & in which condition we use.

we also maintain OM infotypes here.

I would like to know this the only place we maintain the OM infotypes or any possibility in (Infogroups & Infotype menus).

Appreciate your early response.

Regards

Rajesh