Formativ doesn’t let you create new toolbars. It does, however, let you add toolbar buttons to existing toolbars in the GroupWise client.
You would need to write an applet that inserted the text into the appropriate control when executed. Have a look at the GroupWise.ItemSetText() and GroupWise.TypeText() methods in the Formativ Language Guide.
The distribution methods are detailed in the Formativ Studio User Guide. Your options are basically a) use eDirectory/NDS, and b) copy the applet file to a known location.
Each workstation would require a copy of Formativ Runtime to be installed.
I would suggest you download a 30 day trial copy of Formativ Studio and review the Language and Developers Guide. They should contain enough information to get you started.
I hope this helps.