Mythtv 31 how to add both HDHomerun tuners

[mtbdrew]

In past versions this was pretty straightforward but not in 31. So how do I add the second tuner that is at the same physical address as the first?

[bill6502]

https://www.mythtv.org/wiki/Channel_Sca ... ture_Cards

Especially the: "Now comes the key point" part.