Hi,
To change your ringtones you would first click on "Profiles" ( looks like a speaker phone ) then scroll down to the bottom of the pop up menu and you'll see a hidden "Advanced" option, click that. Then click the Profile you're using and you'll be able to change the sounds for a number of things in there.
In holster means while the phone is in the sleeve/carrier/case it comes with - that black pocket thing. Out of holster is when your phone is out of that case.
