You can create more than one Mortgage in Principle (MIP).
However, it would be easier to go though the Mortgage in Principle form, progress to your dashboard (your customer account with us) and then edit the information from there.
To edit the applicants on your Mortgage in Principle, you can go to the dashboard home page, select manage applicants, then edit your buying group.
To edit your deposit, you can go to the left hand side of the screen, select the pencil icon next to the deposit section, and make edits to your deposit amount.
The Mortgage in Principle shown in your dashboard will update with the information you enter.