Hi 2purrcats,
Beginning where we left off...
Once you click the "Edit" button next to the appropriate seller details profile on your "Manage Seller Details" page, you'll see a text box in which to edit your "Payment" information. Just click the "Next" button, and you'll see a text box in which to edit your "Shipping" information. Click "Next" once more and you'll be able to edit your "About Us" information.
I hope this is the information you're seeking. Please let me know if you need any further guidance

-Mike