Perception is not a scene component, doesn’t have it’s own transform, you cannot attach it to anything, it have no representation in the world. I think this been rigged to look forward only, and if you want something else you are going to design your own UAISense, or at least extend upon this one, Btw it is recommended to set up perception in the AIController so you won’t have hopes to use it for such customized eye sights 
You can maybe just do collision (overlap) checks regularly and stream these informations to your behavior tree for evaluation. Think of an array of target Actors a Cone mesh have overlapped with, then check for line trace too and make sure they are not behind obstacles (eg a wall). This will be more expensive (cpu) compared to the use of an optimized (but limited functionality) sight component, however gives you room to design your own system.