How to Add Armenian to Big Sur - macOS
Click on "System Preferences / Settings"
Click on "Keyboard"
Click on "Input Sources" at the top & then Click on "+"
Select "Armenian" & then choose the layout. Two Layouts are available. Click for preview. Click Add. Redo the step to add the other layout.
You should see a language or flag at the top bar.
Click it for checking the list or choosing a language.
Press Control + Spacebar to switch between languages.
Press & Hold Control + Spacebar to view the whole list & scroll between them