Using the shotgun seat is easy. First, adjust the width and angle to fit your bike's top and down tubes (top tubes 35 - 68mm wide, down tubes 35 - 100mm wide). Then, use the quick - release fitting to install it on your bike. Make sure the seat is firmly attached. When placing your child on the seat, adjust the saddle's height and angle to make them comfortable, and let their feet rest on the grippy foot pegs. If you're using the optional Shotgun Handlebar, install it properly. Remember, this seat is for kids aged 2 - 5 years and up to 22kg. Don't exceed the weight limit. For maintenance, regularly check the quick - release fitting and the rubber protection. If the seat gets dirty, clean it with a mild soap and water. Keep it dry to avoid damage to the materials.