[ORD 2021 R2] Can we create Civil Labels using more than one text favorite?

As I'm trying to develop our Civil labels, it looks like I can only use one text favorite per label.
Is there any way to string together multiple favorites into one label?

For example, I have a number of combinations that we use for station/offset callouts of R/W points.

Depending on the requirements, we can use 0, 1 or 2 decimal places. Some labels actually don't give the station and/or offset and just reference the R/W line. So I need Civil Labels like:

Sta (0D) / Off (0D)
Sta (1D) / Off (1D)
Sta (2D) / Off (2D)
Sta (0D) / Off (0D) Lt/Rt
Sta (1D) / Off (1D) Lt/Rt
Sta (2D) / Off (2D) Lt/Rt
Sta (0D) / RW
Sta (1D) / RW
Sta (2D) / RW
Sta (0D) / P.L.
Sta (1D) / P.L.
Sta (2D) / P.L.
R/W / Off (0D)
R/W / Off (1D)
R/W / Off (2D)
P.L. / Off (0D)
P.L. / Off (1D)
P.L. / Off (2D)
R/W / Off (0D) Lt/Rt
R/W / Off (1D) Lt/Rt
R/W / Off (2D) Lt/Rt
P.L. / Off (0D) Lt/Rt
P.L. / Off (1D) Lt/Rt
P.L. / Off (2D) Lt/Rt

If I can parse together more than one text favorite into a label, I only need to create nine favorites. If the Civil label can only be a single favorite at a time, I have to create this whole list.
I would much rather create the pieces, and build a label to meet the need, rather than try to craft every possible permutation we might need.

I'm sure I've asked this before, but can Civil Labels be created on the fly, at the time of need, without mucking up the resource XML? It's pretty common to need something that hasn't been preset. In Civil 3D we can create new labels pretty easily that are just saved into the drawing. We do our work, don't mess up the networked resource, and keep moving. Since ORD Civil labels are written to the centrally located XML, it looks as if any new labels need to be created in that file, which is NOT the way we want it. Or does everyone end up with their own personal Civil Labeler XML that they have to open to make new labels? What happens if someone else opens the drawing, and wants to place another one of those labels (but they don't have access to the personal XML)?

Thank you.