Help LG G4 Volume control

[49erfootball]

I just got the LG G4 and I want to be able to set my phone to vibrate or other while the phone is locked. I have been unable to do so. Camera pops open or nothing happens.

Can anyone help? Is there a work-around?

 

[Pugs1957]

Does this help? http://devicehelp.singtel.com/web/l...urning-vibration-on-my-mobile-phone-on-or-off