Setting a different alert chime tone for stickup cam

Hi all... Prior to today my setup was a Doorbell pro and 2 chimes ( 1 in kitchen , 1 in hallway.) . All working as should. Both chime tones are set to `Navi` tone for motion at the doorbell, and " ring default " tone for rings pushes. Today I added the ` All new stickup cam , plug in. Got the cam to work and alert on motion ok,,, BUT... there doesn`t seem to be any way to set a different chime tone for the stickup cam, i.e. a different tone to the ring pro... so,, apparently no way to distinguish between motion at the ring pro (at front door) , or motion at the stickup cam ( in Back garden) . I get the `Navi` tone on the chimes, irrespective of which device has been triggered. I would have thought that being able to set a different tone should be pretty fundamental... Am I missing something ?? Any help appreciated. Thanks,,,, John ( in UK )