You can add-on to someone else's recognition when you see these symbols on the Social Feed:

 

 

Once clicked, you'll be prompted to select an add-on amount.

Note: add-on points are taken from your GiveAway points.

You can choose from the pre-set point amounts, or click on 'Advanced options' to enter a specific amount and/or to add a comment along with your add-on:

 

Once you click 'Send Add-On', the recognition post will appear at the top of the Social Feed with your add-on. If you also included a message, it will get posted as a comment.