I don't believe you can. The "add to workspace" capability is really only geared up to 2 things:- 1. loading objects from the DB (at which point a default view will be used and whichever one you switch to will be cached for next time)
2. to invoke a web site via URL (static coz there is no way of passing parameters)
So, all-in-all, not as helpful as it might at first seem.
That's true. No easy way to add a button to a toolbar. I can add a button to a form like a servicecall form. But what if i want to create a rule when this butten is pressed that opens a specific checklist instead of the wizzard ?