To install the chrome extension for loom, Please go to the link below:

https://chrome.google.com/webstore/detail/loom-for-chrome/liecbddmkiiihnedobmlmillhodjkdmb 

Once this link has been clicked on, click on the add to chrome button.

Once this has been added to chrome, you will have to pin it to chrome, to do this, please click on the puzzle piece looking icon at the top right hand corner of chrome.

make sure that the loom extension has been pinned by using the pin icon.