I found the following in the VFP help under
"toolbars - adding custom to form sets":
----------------------------------------------
To add a toolbar to a form set using code
In the form set’s Init event, use the SET CLASSLIB command to specify the library containing the toolbar class, and then create a toolbar from that class in the form set.
For example, to add and display the toolbar tbrPrint, which is based on the printing class in the inventory class library, add the following code to the form set’s Init event:

SET CLASSLIB TO inventory
THIS.AddObject("tbrPrint","printing")
THIS.tbrPrint.Show