Create trigger class with box component, which work like trigger volume, you can also extend volume class itself if you like. In that volume make a option for charater to have iption to press E, also in volume create matineeactor varable and make it public. Now when you place volume in details tab you can select matinee actor, in volume or even character class that will overlap it then you can access choosen matinee and play it. Its just one eay of doing it