On Windows I used the Snipping Tool to draw a square over where I want to capture. Then I do a copy (control-C) and then come here and do a paste (Control-V). That's all there is to it.@Amir, how do you copy from Roon?
On other operating systems it should work the same but not sure about the browser's ability to accept the paste. In that case you would need to save it to a file and then attach it here.