Probably a stupid question, but I am trying to figure out how to use the controls on the top center of the panel to change the settings for Altitude, Course, Speed, etc.  When I hover the mouse over each dial I see the blue circle seeming to indicate that will change the setting; however. I cannot get the value to change.  I have tried holding the mouse in place, right clicking, left clicking, etc... But no luck.  Can someone give me specifics on how to get the settings to change?

Thanks

Use the mouse scroll wheel 😉