The "OneClick Capture Window" in Snagit is the small hidden window which will show up when you hover on. Depending on your preference, you can put it on the top or anywhere on the side.
You can also hide the window if you think you do not need that. Please see the steps below to hide the window.
Step 1: Open the "Classic Capture Window" and click the "View" tab from the ribbon;
Step 2: Click "Hide OneClick" from the drop-down list.
Please visit Snagit official website www.techsmith.com for details.
Instead of hiding the OneClick button, you can also move to another location by dragging.