I have created and invoice, my client has made 2 deposits excluding tax to this invoice how do i edit the invoice to show these transactions?

Hi MissBaglione

First, you'll want to create a new sales item under Invoicing -> Products and Services called Deposit.  For deposits, you'll want it to go to an account for a short term liability called Deposits, referencing the money your client has given you, for which they have not received product.

Next, create two deposit invoices for your client referencing the newly created item, and then create bank deposits to pay these invoices.

Finally, under New -> Customers -> Delayed Credit create two credits for the deposits which you'll add to the final invoice you give to your customer that will reduce their final invoice by the deposit amounts received, while also charging the full tax on the final bill.

Hope this helps!