You can see a quick video on how to pin the SkoolBot Classroom Assistant icon so that it is visible on your browser by clicking here.
It is a vital part of the installation - it's how SkoolBot alerts you of important events.
Here is the same information in written form:
Click on the black puzzle piece icon in the upper right of Chrome (it is where you manage chrome extensions). Scroll down until you see "SkoolBot Classroom Assistant", then click on the white push pin icon to the right - it should turn blue to show that the icon will now be visible in the Chrome bar (near the puzzle piece).