The Civa buttons are on the right side of the AP popup while the TAT gauge can be at the bottom. So you only have to combine both things.

[Window03]
Background_color=0,0,0
size_mm=455,130
position=2
visible=0
ident=10005

gauge00=Captain_Sim.p721.P12!P12_001_ap,      0, 0, 427, 106
gauge01=../civa/INS!Config,                              0, 0, 0, 0, Rp727
gauge02=../civa/INS!NavModeSingle,                  427, 0, 25, 35
gauge03=../civa/INS!MsuPanelIcon,                  427, 35, 20, 20, 40
gauge04=../civa/INS!CduPanelIcon,                  427, 55, 20, 20, 41
gauge05=TAT!TAT, 140, 106, 220,22