If you have a Stomp with a Mercury car seat, all you need to do is pop the car seat handle in the upright position you will be able to take the car seat off the chassis and the adapters stay on the chassis. 

If you have a Stomp with a Galaxy car seat and they are on the adapters with memory clips.  You will need to be standing at the chassis handle and if you pop your hand on the back of the adapter and push the clip towards you, you will hear a click, you will then be able to take the car seat and adapters off the chassis together. 

Here's a link to a video we have on our website that showcases all the great features of the Stomp https://youtu.be/TOGTgagHpjY