Start by typing /ch and the command /chart will pop up. Click on it.
There are two needed parameter's
Type in the players full name or just last name
Choose the market you wish to see from the dropdown menu
The x-axis:
The 6 bars are the last 5 games and the projection. L5 means 5 games ago. L4 means 4 games ago, etc. The bar on the very right is the projection, it will always be in blue.
The Red Line: The red line is the line for the prop. It is usually 0.5 for Hits, RBIs, Run, and Single. And it is usually 1.5 for HRR and Total Bases.
Color of the Bars: If the recorded stat in the game is less than the line, the bar will be red. If it is above the line, it will be green.
So basically:
The chart displays the last 5 games and today's projection
Easily see value based on the red line which is the prop line
Find out the projection for any prop and how it compares with the last 5 games' data