Make one of presstart.exe and Spacer plugin

Yes, you are rigth, and this I what I did in the upper part of my bar, as you can see in attached pict but since I'd like to customize to have the prestart associated to the spacer plugin because you can add a png image as for example my face: now I am in the bottom and no action is associated to a click on the spacer plugin.

I hope I've been clear now: actually I'd like to associate an action to the click on spacer plugin!