It's simple to add another person/s to a payment request after you have sent it
Go to Payment Requests.
Select the payment request you need to edit.
Under 'Payment Collections', select the '+ Add Person to Request' button.
Follow the prompts, then finalise by clicking 'Update Payment Request'.
An SMS is sent to the selected individual/s. Your payment request tracking page is also updated to reflect the added team member/s.