Ok, I did some research and figured I update you guys with some more info.
I read upon forums and realized that:
1) in VBA, add-in has to uninstalled
2) close excel
3) deleted from Application Data folder
4) open excel
5) in VBA, install the add-in again by file from shared drive of the more updated version

I don't understand how I am supposed to do all this in VBA. I mean how can I delete file while Excel is closed from VBA. Below code doesn;t work
    If AddIns("Cclmodules_Tel").Installed = True Then
        AddIns("Cclmodules_Tel").Installed = False
        Kill Environ("AppData") & "\Microsoft\AddIns\CCLModules_TEL.xla"   '<---Permission denied error here
    End If
    AddIns.add("\\cadd-ntsrv00\cadd-drv\Shared_Files\Cable Material Catalogue\CCLModules_TEL.xla", True).Installed = True
How do i update my add-in code to all computers referencing it?