374971 modify on Vtiger CRM

Hello, i need a to modification to the vtiger crm, i need a system to make this: I sell Advertising space on a newspaper, so when i load the contract on vtiger i need to insert also a date when the Advertising must be insert in the newspaper. So every day it show me the Advertising to insert in the newspaper (1 list with every Customers that this day have to insert the Advertising.) Example: customer A make 3 adv to 20th december and 2 adv to 22th december customer B make 1 adv to 20th december and 1 adv to 22th december the 20th december it show me: date| name adv | customer 20 | test | A 20 | test1 | A 20 | test3 | A 20 | test4 | B i hope is clear thanks