Not being able to see unapproved invoices makes AP management difficult. Staff often ask about the status of their invoices but if the supervisor has not yet approved, I can't see the invoice at all. We should be able to see that it is in pending/unapproved status.
Allison, I run into this problem ALL the time. My solution only works if you have Admin privilege's.
Under Expenses --> Settings --> User settings --> find the username of the supervisor holding up the process --> open user's settings --> at the bottom, set Out of Office redirect to YOU or another supervisor that is available. --> Go back to manage expenses and either approve or reject the invoice yourself. Remember to go back in a uncheck Out of Office so the supervisor can approve again.
This solutions may not work for all, but I keep notes of which supervisor is holding up the process and if it happens enough it could be ground to have someone above them relay the importance of timely approvals. I will try to reply if you have further questions.