User defined order of placement on taskbar

Hello,

I really would appreciate if taskbar tweaker would allow me to specify a certain order of opened apps on the taskbar. For example I would like to have the opportunity to tell tt to have the email-program first, then firefox, then notepad++ etc independent of the order of starting it, because tt takes care of it and moves them to their predefined position relative to each other. Programs not defined in this list rest untouched.

I hope I was able to convey my idea ... if not please tell me, I will try again.