In the library, find the clip you want to review. Hover your mouse cursor over it and press the "Review" action to open the Review application. You might have to press the "..." button to reveal the action. 


In grid view, it will look like this:


Limecraft screenshot detail illustrating how to access the review app by hovering over the items



If you want to review multiple clips in batch, select them all in the library, and press the Review icon in the toolbar which appears at the top:


Limecraft screenshot detail showing how you can open a batch of files for review at the same time


You should now see the Review application:

Limecraft screenshot showing how to use the review function


Download the Review cheat sheet

Download the Review Cheat Sheet, print it, and hang it on your wall!