Subscriptions Table on home page

Greetings,

In Windchill help, there's a topic about Subscriptions Tables.  It infers you can customize the view of the Subscriptions Table, but I can't for the life of me figure out how.  I customize all kinds of tables but this one does not look as if it can be customized.

What am I missing?

http://support.ptc.com/help/windchill/whc/whc_en/index.html#page/Windchill_Help_Center%2FSubscribeTableRef.html%23