Windows – Full Screen with Microsoft’s Mac OS X RDP client

It sounds like you need a client management solution. I prefer the Casper Suite, but in the interest of full disclosure, I work for the manufacturer. However, I was a customer for some time before becoming an employee. There are competing products and I advise you to evaluate more than one solution before making a purchase.

With all that said, a client management solution will give you a central inventory system, and centralized management tools. The information regarding your inventory and management tasks are stored on a server that is accessible to your entire staff, and depending on the privileges you assign, all members of the team can perform management tasks.

I hope this is helpful.

The easiest way might be to disable the Fn key. Since you say that using Fn+F10 works, you could go into System Preferences > Keyboard > Keyboard, and enable Use all F1, F2, etc. keys as standard function keys. This way you no longer need to press Fn to send F10.

The second solution is on the PC side. You could install a utility such as AutoHotkey on your PC and remap the keys there. That way the keybindings will only work on the PC. Lifehacker has nice looking tutorial about this. In AutoHotkey, you can decide which applications the shortcut applies to, but in your case it seems like a global hotkey would work since it is running on the PC side.

Another solution might be to try one of the ways to create keyboard shortcuts menitoned in this Lifehacker article. This article's goal is to help you do similar things that AutoHotkey let's you do on the Mac.