I wrote about adding a line in the [WindowXX] section of the panel.cfg that allowed the gauge to remain in view even if you changed the view using the A,  S, F9, F10, F11, and F12 keys. That line is

type=special

I use it like this in the L-1011 so the CIVA remains displayed when I change views:

[Window03]
size_mm=200, 286
background_color=0,0,0
window_pos=0.30,0.07
visible=0
render_3d_window=0
type=special
ident=11004
gauge00=civa!msu, 0,  0, 200,  68
gauge01=civa!cdu, 0, 68, 200, 218

Here is a video showing how it works:

https://www.youtube.com/watch?v=oxtSJ09ipyw