Do you think it would be possible to allow the agency managers to see who the volunteer selected as the person to approve their hours and their email address so we could send them an email individually for pending individual hours? And with their approval, so the managers could just approve the hours with the approval of the person contacted for them. It would be adding an extra step but that seems less complicated.
Although, I would rather see the person who the volunteer wants to approve their hours receive an email about approving the volunteers individual hours and doing it themselves.
Example of the email with extra step:

Hello [First Name,Last Name of person to approve hours],

One of your volunteers, [First Name, Last Name of volunteer], had logged [X amount of] hours onto our site, GetConnected. GetConnected allows volunteers to track their volunteer hours, build their volunteer resume, and find needs (volunteer opportunities). If you want more information on the site please call or email [this number] and [this email]. [Volunteer First Name, Last Name] has selected you to approve that they volunteered for [X] hours on this date [mm/dd/yyyy]. Will you approve or decline their hours? If you declined, was it because it was the wrong date or the wrong amount of hours volunteered? Thank you for taking your time to help a volunteer track their hours!

[signature]

Example of email without extra step: (differences are bolded)

Hello [First Name,Last Name of person to approve hours],

One of your volunteers, [First Name, Last Name of volunteer], had logged [X amount of] hours onto our site, GetConnected. GetConnected allows volunteers to track their volunteer hours, build their volunteer resume, and find needs (volunteer opportunities). If you want more information on the site please call or email [this number] and [this email]. [Volunteer First Name, Last Name] has selected you to approve that they volunteered for [X] hours on this date [mm/dd/yyyy]. Will you approve or decline their hours? Here is the link/ page that you are able to do so. [Insert link/page/etc]. If you declined, was it because it was the wrong date or the wrong amount of hours volunteered? Thank you for taking your time to help a volunteer track their hours!

[signature]