I had this setup on another windows 10 PC I have at work, but I can't replicate it.
Basically, I set a website shortcut in my toolbar in DirectoryOpus
Then I click said button
Instead of opening via another chrome tab, it opens its own dopus-iframe? using chrome browser? so it has a dedicated icon sitting on my taskbar
Then I can press WIN+1 shortcut key to min/max that website up if its sitting in taskbar position 1.
Example on my other PC with this solution implemented using directoryOpus (cant replicate this on this PC though)
I have airtable, and googlephotos, running as its own chrome application sitting in their own taskbar using directoryopus