How do I choose a specific Directv Stream channel Samsung Smart Remote?

I recently purchased a Samsung TV that has the Simple/Smart remote.  ]

I was able to install the Directv Steam app on it and all is working fine.

I turned on display of the channels.

And, I can use the Samsung remote to move up and down + and - channel button.

But, without a physical number pad on the Samsung remote I can't figure out how to choose a specific Directv Stream Channel.

Does anyone know how I can choose a specific Directv Stream channel using the Samsung Smart Remote?