[rt-devel] How to Customize Tabs on homepage of RT3.8?

[Anil]

How to customize the tabs on the homepage like simple 
search,tools,tickets,configuration?
Also, how to add new entry in that list?

Basically, i want to be able to track my customer information along with 
tickets. There is no option already available in RT to insert,view,modify 
customer information. So i would like to customize it for my usecase.