In case you didn’t know, you can get a screen grab using just standard Windows tools: the “print-screen”/“Prs Sc” key on the PC keyboard puts an image of the whole screen on the “clipboard”, ready to be pasted wherever you want. And Alt + Prt Sc creates an image of the currently active application. If you paste into MS Word (and other s/w), you can crop/size the image in the document; alternatively - and better if you want only a small part of a large image - you can use Windows utilities to crop the image before pasting elsewhere. Of course, to keep the image small from the outset, you can also sometimes size the application window to show little more than the area you want, before using Alt + Prt Scr.