Here is a very small, handy program that will do this for ANY program you use.
It is called "DeskPins" It is completely freeware. No ads, no malware nothing installed but the program itself and it works like a dream. Very easy to use.
➥ You can get it FREE here: http://efotinis.neocities.org/deskpins/index.html
Or you can get my personal favorite,. :TurboTop
TurboTop automatically culls the windows titles, so you just click the title and it places them always on top. You can also add TurboTop in the launch command of a process to make it stay on top by default. Very easy to use and again, it is freeware.
➥ You can find it here: http://www.savardsoftware.com/turbotop/
I hope this helps your question and fits your needs!
-CYN