How do you assemble an above ground pool?

If you are talking about for a swimming pool this is how, 1st you have to unscrew your drain plug & get the water out of the pump, next remove the whole top, there should be a metal ring holding it on. Then carefully start removing the old sand, your insert is in the middle of that. Once all sand is removed, rinse the inside out & fill back up with Flter Sand 2/3rds full & put top back on & fill back up with water.You are ready to go.Hope I was able to help. Drain water from filter, remove the metal ring that holds top on. remove old sand carefully because you have your inside guts in the middle of all the old sand, once it is removed, rinse your pump out with water hose, now you are ready to start putting new sand back in, fill with new sand 2/3rds full, always use swimming ool sand. Hope this helps.