Add-In toolbar button path

Question

I'm building a custom toolbar and I want to include 4 tools (add-ins) that I've created, in it.  How can I set the tool path for each buttons in the toolbar?

Something like:<Button refID="G:\Add-Ins\Public\findaddress.esriaddin" />

LeonVictor · Answer

I think first you need to refer one or two same logical projects. And after that check following link which may be helpful to set proper toolbar button path.
http://www.scribd.com/doc/94992300/117/Tool-Path-Simulation

DaveCouture · Answer

I guess the only way to do it, is to create a Toolbar project and include the files from my other add-ins (projects), then modify the Config.esriaddinx file to include  the buttons for each tools (add-ins), in the toolbar.  There should be an easier way to call other add-ins, in the same fashion as calling executables.