Chart not being seen, Object not found in Object Permissions

Hi,

I created a chart showing User sessions so that our leadership team could see how many users were logging into the platform on a monthly basis. It all looks great but nobody but me can see the data. (This chart was added to a configuration dashboard.) I have also added the role to Read access. The object is User Session but it is not listed in the Object Permissions. Can anyone guide me to the correct area to make this available to our leadership team? 

Thank you.