set display to a virtual workspace

[Mike]

I'm setting an xterm on a host to display on a client like this:

setenv DISPLAY martin:0.0
xterm -xrm "*workspaceList: Two" -e "some terminal based app"

This places the xterm on martin's display in the virtual workspace
named Two.

Now I want to do this:

xterm -xrm "*workspaceList: Two" -e "some graphic based app"

I want the xterm and the graphic app to display in the virtual
workspace named Two,
since the graphic app write diagnostics to stdout.

Any ideas on how I might accomplish this?

I already automate the xterm display from host to client at login.
Now, I want to add the graphic app if possible.