Emojis are a fun and quick way to share opinions, interact with your teammates' content, and react to the items added to the Space. You can react to any object, such as text boxes, shapes, images/GIFs, tables, Sticky Notes, audio clips, and voice notes.
To react with an emoji, select the object and choose the Add Reaction icon from the Quick Access Toolbar.
If you already see a bunch of emojis added by your teammates, you can click any of them to add your take, and the count will increase by one.