Here is a hint I post on behalf of Manfred OE6BMG:
In order to get the waterfall in between the two red lines, you need to increase the SHIFT at the transceiver to 1000 Hz.
Besides that, set the following menu entry:
055 PKT SFT = 0
and, if using VOX:
052 VOX DLY = 30
114 VOX SEL = data
73, Martin HB9FSV
SHIFT at zero Hz
Useable bandwidth at left side only
SHIFT at 1000 Hz
Full bandwidth available
Please note that in the screenshot you provided - it seems like you are at 2300Hz BW. while VarAC is mostly 500HZ. Just saying.