Volume controls

I am a fairly new user of lectora and I need assistance with volume controls. I am designing a training module which will have audio on each page. I can not find a way to add a volume on/off button that will be inherited in all pages and work in conjunction with all my audio files. Please help out there!I am a fairly new user of lectora and I need assistance with volume controls. I am designing a training module which will have audio on each page. I can not find a way to add a volume on/off button that will be inherited in all pages and work in conjunction with all my audio files. Please help out there!