Second Monitor Blues

I hope someone can provide some ideas on how to accomplish the following......

I have a recent vintage iMac with a second monitor, running Mavericks, Parallels 9......

What I want to do is simply have my parallels VM occupy the second screen full time (its my work stuff). The problem is, as I use other programs from the other screen, the Parallels VM disappears off the second screen, replaced by a grey background or even pictures (when I'm running Lightroom 5).

Is there any way I can put the VM on the second screen, lock it up there, and have everything else work from the main screen?

Thanks in advance for any assistance

Kenny in NJ