2012 nissan versa, 4 speed automatic transmission, cvt, , with, a dipstick, ok?,

this one has a dipstick, it is a 4 door hatchback, , underneath, i located the trans pan., , and has a larger size bolt, on our car, in the center of the pan, which ive come to find out, is not a drain plug, , so what im really asking is this?, , is there, any real way, , for , us to, , take off the drain pan, and gasket, i know all need, replaced, before hand, is there really a way, , to drain the synthetic trans fluid, , , and , to safely refill it from the top, where in our car, model it has a dipstick, to read the ammount of fluid in there, lucky on that part>, and have a hand pump, fluid transfer pump, , , also was told, the trans filter, on this is not serviceable., so is it possible, , to safely and acually drain, , this sealed trans, cvt, , by removing the pan, ect>?, and then , replacing , a new pan gasket?, and the pan?, , and then from the top , dipstick hole>, , filling , ?, , or does need pumped in?, , under pressure pumped in?, speacial pump tool beyond?, ,, live in the 65644 area code mo. , , , any other way besides the far away, and xpensive dealerships?, , on utube, , 1 guy had , but not the quite same, , and even then left out all, details, and showing nothing, , thanks all, , if anyone , kno, all info is appreciated., , i , would love to get photos from underneath, ect, as to the pan setup, , and all else, but i dont know how id , get them, on to this forum, from my phone. , thank you all again.