Finmo allows you to delete a secondary borrower in the application, however you cannot remove the primary (first listed) borrower.
Here's how .
Click into the Application, choose "Borrowers"
Scroll down to the borrower info of the one you want to delete and you should see "Delete borrower" on the right hand side
Click on "Delete borrower".
Once removed you cannot retrieve their information on that deal. You can however, re-invite them to the deal as an "existing borrower" and have them fill in the application again.
Should you need further help please click the chat button in Finmo or send an email to firstname.lastname@example.org.