In the Engagement section, you can see:
how many likes were made on your posts
how many times your posts were clicked
how many comments were made on your posts
how many times your posts have been shared
engagement rate by impressions
engagement rate by reach
The graph reveals those metrics on a daily basis - how many comments have you got on a post from last Tuesday? How many likes did you get that day? How many likes? Graph will tell you.
Engagement rate is overlaid on the chart as a blue line. You can use the drop down menu to show engagement rate per Impressions or per Reach.
We also compute the Total engagement which consists of 4 metrics - likes, clicks, comments, and shares.