CRM - Report: manage difference from YEAR

CRM - Report: manage difference from YEAR

Hello there,

We wish make a report with "Potentials" modules that show the difference from First Trimester of 2014 and First Trimester of 2015 

i try to set 2 report with 2 different gap of time but still is so difficoult to read online, (open a report per tab on browser)... 

... 

A solution that i think is to make a custom field that automaticaly get the value "2015-T1"  if the date of closed potential is between Jen - March and "2015-T2" etc.. how is it possible to do ?

thanks


- Zoho Specialist for Cloudnova - The italian Zoho partner -
www.cloudnova.it - www.crmfacile.it