when posting a message here, click the 'Additional Options' link. You will see the 'Attach:' button. Click 'Browse' then go to the location on your computer where the screen shot has been saved. Select the image.
Mac OS 10.12, 10.14, 10.15, Win7, Win10
VDL2.5.5, Finale 2010-14.5, Finale 25-27
Kontakt 4-6, various other soft synths