Explode certain c4 and different sensors make different noises
Maybe be able to group c4 and sensors to make a different noise so you can have 2 separate rigs. for example place a sensor and c4 near a door then open a menu, group the sensor and c4 to something else then place them next to a vent. When somebody walks by the vent it would make a different noise than the one near the door. You can then choose which c4 group you want to explode.