Yes, you can 'like' and comment on your colleagues' recognition and we encourage you to do so!
Head to the Recognition Wall in your program and find the instance of recognition you would like to 'like' or comment on. Under the Recognition reason, click on the heart and this will show everyone in the program that you like the Recognition moment. Next to the heart, you will also see any comments that have been made.
Want to add your own congratulatory or encouraging message? Click 'Add Comment' at the bottom of that instance of recognition and press enter. Your message will appear under the recognition moment. Easy!