CRM Vtiger modifications in the calendar module

Hi, I need two modifications on a Vtiger CRM. 1. When an event (call, meeting, to do) is related to a account, you have to display the contacts, the history and the activity history related to this account. This modification should appear in both view (edit an view). See the picture for the exemple 2. In the edit view of the calendar, I need a new function:"Save&Clone". When you click on this button two things should appends. a) save the current event and change the status to held b) open a new event related to the same account with the same title You will have to provide: - a list of the modification you have done - the files modified You have to be familiar with vtiger to bid on this project. I use the escrow payment for all my transactions. Thanks for you offer. Pierre-André