Approvers for Suggested Payments are defined via the system security settings as follows:
From the navigation menu, select System, Security, Approvers, Suggested Payment Approver
Select the line of the Security Profile the user belongs to
Click Edit
Tick the boxes for Stage 1 and or Stage 2 to select which stage you wish users in the profile to approve
Tick Disputed if you wish them to be able to approve disputed invoices
Click Save
The changes made will apply to all users assigned to the Security Profile that was updated
To see a list of the users in the profile, click the eye icon
Users will need to close and re-open Financials for the changes to become applicable
Click the following link for information about Security Profiles.