[xubuntu-users] Force a program gui to stay in a specified workspace

[L.M.J]

Hi,

 I'm wondering what option I may have uncheck to have this behavior. Each time I click on a link (from my
 email client, instant messenger...), the default web browser move from its workspace to the actual workspace
 and then, it opens the link.
 I would like to force the web browser to stay on its own workspace, any way to do this ? I had this behavior
 on my previous xubuntu :-(

 Thanks for any information.