If you click on the icon and look at the top right of the popup window, you’ll see in order:
- Disable restrictions globally: this will disable NoScript in all windows;
- Disable restrictions for this tab: same as above, but for the tab in which you click on it;
- Set scripts on this page to temporarily trusted: similar to the second option. but NoScript will keep operating, so current script will be available, but future scripts will be blocked;
- Revoke temporary permissions: revert what you did with the 3rd option.