To manage the user roles, navigate to Settings -> Security -> Users.
You will get the list of the users (CRM Users).
Now, select the users whose roles are to be managed and click on the MANAGE ROLES option. This will open a pop-up to select roles.
To access AppJetty product entities, assign ‘AppJetty Calendar 365’ role to selected users.
Note: System Administrator will also be able to access AppJetty Product Entities.