General

Question about reward points

Hi i recently started a second main on the same account that i have my Demonslayer and after leveling him up to 140 and making a couple of link mules for him im not sure if i can get reward points for bossing on both my characters on the same account. My question is can i get rewards for both characters for the same bosses or is it one per day per account. Also if it is is there a work around like completing the task on both characters before accepting or something like that?