How to setup a Button Sequence

Hi I’am a newbie in making blueprints and I wonder if there are tutorials of making a button sequence to open a door or something.
I’ve made some gameworlds in Blender and 3dsmax for the game Myst and I wanted to rebuild this in UE4.
In one of these worlds the player should push/pull switches/lever in a specific order to open a door.
I hope somebody can help me with a blueprint or videotutorial about these Blueprints.
I hope to hear from you.