D&D 5e (Shaped) Crit Adv Roll

hi everyone, I have a simple question about the crit roll from the D&D 5e (shaped) character sheet. I searched on my player's handbook and couldn't find anything relared to that adv. crit roll, someone could pinpoint to me where on the book it says if I score a crit with advantage I'll have another crit formula. I really searched for that a lot -_-'''. PS.: for testing purposes I changed the crit range to 1.

You don't get "another" crit. If you rolled with disadvantage in this case, and crit the disadvantage roll (say you were a disadvantaged Champion who rolled a 20 and 19 as your attack rolls), the game provides you with the appropriate critical die. If you don't have ADV/DA, just ignore anything linked to ADV/DA. It's a lot easier than prompting every time.

ty, now I understood, I tought that this last roll was related to some phb rule because of the passive adv/da that adds or subtracts 5.

This is the same as it is on the default sheet. Basically you can only check 1 dice at a time to see if it crit. You cannot say "If the normal roll or the second roll crit then do X". It's unfortunate. I hope Roll20 allows for OR statements in their roll template syntax sometime soon and then it can be fixed.