Here is a generic way: http://www.howtogeek.com/196958/the-3-best-ways-to-make-a-window-always-on-top-on-windows/
With a Keyboard Shortcut: AutoHotkeyRELATED ARTICLE
The Beginner’s Guide to Using an AutoHotkey ScriptAutoHotkey scripts are a great way to customize your computer, but may seem daunting at first. Don’t worry – getting...[Read Article]Using the excellent and useful AutoHotkey program, it’s possible to make a one-line script that will make any window always-on-top when you press a certain key combination. The resulting script is lightweight and won’t use much resources or add unnecessary clutter to your system.The original Always On Top premade script from Digital Inspiration no longer seems to be available for download, so you may want to make your own — it’s a great way to start learning AutoHotkey too. Don’t worry; it just takes a single line of code.First, download and install AutoHotkey. Launch AutoHotkey, right-click the green H icon in your system tray, and click Open. Click File > Edit Script, paste the following line of code into the script file, and click Save:^SPACE:: Winset, Alwaysontop, , AClick File > Reload Script in AutoHotkey. You can now press Ctrl + Space while AutoHotkey is running in the background and the currently active window will become always-on-top. Press Ctrl+Space again and the window will no longer be always-on-top.If you don’t like the Ctrl+Space combination, you can change the ^SPACE part of the script to set a new keyboard shortcut. Consult the Hotkeys documentation on AutoHotkey’s website for help.