no it doesn't seem possible.
you can get your scripts to check and only run on the right SO's and therefore it doesn't matter if some one clicks on them. However i can understand that that is messy .
a way to do it would be like your other post and just make a page for servers and one for workstations
http://community.kaseya.com/xsp/f/145/t/17771.aspx
im sure it will be possible to auto assign them