Once you have added screenshots to your individual trades, they will be visible in the Chartbook tab.
Each trade has its own space in the Chartbook with all assigned trade screenshots.
You can directly open the trade by clicking the "Open Trade" link.
A click on the thumbnail opens up the full view.
In the full-view mode, you can use the keyboard arrows to navigate between the screenshots.
Alternatively, you can use the arrow button(1) next to the screenshot.
To leave the fullscreen-mode, click the X button(2) at the bottom right.