Sometimes you need to perform a screenshot that requires an action to be performed right before hitting the screenshot. How to take a screenshot on a Mac: Using a timer delay Click Other Location to select a custom destination.Options include your desktop, your documents folder, your clipboard (so hitting Command + V would paste that screenshot into a document) and other apps, such as Mail, Messages and Preview. How to take a screenshot on a Mac: Change default screenshot file location Your screenshot will show up on your desktop.On the window that pops up, select 'Capture Selected Window,' the second option from the left,.Perform the keyboard shortcut Command + Shift + 5.Often, mostly for these 'how to' articles, I take screenshots that have all of one window in macOS, and nothing else. How to take a screenshot on a Mac: Just an app window