52 Remote and Harmony Setup?

I currently have the 52 remote for my H3. I also have a soundbar that gets turned on every morning by just hitting the volume button on the 52.

My problem is on the Harmony when I try to add another step there are no selections for volume on the DISH network add an activity.

When I go into settings on the H3 for remote, it shows me two extra buttons that can control several add on activities but none of them are vol.

I'm not a tech type so I could use some help.