You can set the applications to appear on a fixed workspace.

For example all browsers come on workspace 1, all editors come on workspace 2, ...

You can set this in the xmonad.hs file.

There are 4 things to check/remember.

• use the correct workspace name (icon, 1, I, web, ...)
• add classname line
• add m1Shifts
• BUT also the DoShiftAndGo line

The video will make it clear to you.