customise apptha marketplace magento extension

1. In seller dashboard, i need to have following fields. Pan no, din no, Bank account number,Bank name, IFSC code. 2. In seller dashboard there is an order button and i want to change the status of the order like Print Invoice, cancel, refund. 3. i would like to have the checkbox next to order button. 4. While adding products,i would like to enter short and long description. 5. You want any contact mechanism to show msgs that seller is getting from customers