A few months ago I got a call from my mom saying the plug thing (I don't know the real term) had popped out of its hole and water would come out through it. The way the shower works is that on top you have a ball faucet that you push up to turn on the water and then turn it left or right for hot or cold. Below that is a plunger type metal stick that you would press in to turn on the shower mode. Below that is the faucet head where the water comes out normally and below that is the plug that says whether or not the drain is plugged. The metal stick thing had popped out and all the water was coming out through that small hole instead. I still have the metal stick and the spring but I have no idea how to get it back in or if it can be fixed easily. I have 0 experience with plumbing or fixing appliances of any kind. I do have pictures but are unable to upload them at the moment. Based off what I just said would anyone know how to fix it or if it can be fixed by someone with no experience?