When working on two files at the same time, it has always seemed a bit cumbersome to switch between working windows and I found that I can open an older version of DataCAD at the same time on another screen. So I may have one CAD sheet open in v22 and my master plan on another screen in v21. Pretty cool. That still leaves me one screen to monitor the forum, or something important like FaceBook.
If you need more than the standard CTRL+TAB to switch between full screen open files you could also 'stretch' the DataCAD window across two screens and use the Window > Tile Vertically (or Horizontally if stacked widescreen monitors).
MVTOTB's won't switch between files but if you use them and need larger views you can configure them to take up the entire monitor (see screenshot) to assist with drawing navigation.
DataCAD 22.02.14.02 BETA on my own build Gigabyte MOBO rack mounted Windows 10 Pro 22H2 x64 i7 920