Add custom tile in nav bar of main form in CRM 2013

Hi,

Before a year ago, I have migrated from CRM 4.0 to 2013 and using migrated form instead of Main form. At that time we have added common tiles in Contact entity for same entity (e.g. Activities & Closed Activities). Now we are moving to Main form which is provided by CRM itself and we facing issue to add new tile for Closed Activities.

Is there any way to add custom tile for same entity?

Thanks In Advance!