Pictures can be assigned ratings of from (no rating) to five stars.
Ratings are assigned using the thumbnail rating icons or the Apply Ratings option in the Image menu.
To select multiple pictures, keep the Ctrl key (or on Mac computers, the /command key) pressed while clicking each image in turn. To select two pictures and all images between them, click the pictures while pressing Shift.
Click the icon and choose a rating of from (no rating) to five stars.
Selected files can also be rated using the Apply Ratings option in the Image menu.