what will happen if u have full blood shards? how do I spend them? can someone help me? also can someone post their settings pls

i really appreciate it
Also i cant seem to set it so I can play normal rifts? I dont want to do Grift or trials I just want to play normal rift that only needs rift keystone fragments. Can someone hel p
edit if my inventory dont have gf keys it will do normal rifts but it picks up the keys to do grift and trials which i dont want that to happen because i want it to do normal rifts ONLY. How do I do that? what are the settings?