Help Assigned Extra Recommender

Hey I had one question I am having problems with. Apparently I can add and assign letters of recommendation after I submitted my common application. I accidently assigned an “other recommender”(I had 2. I wanted to send the other one) and he has alerday submitted his part. If I manage the recommenders and unassign this person, is the letter alerday delivered? I unassigned him 20 minutes after?

  1. I heard sending 2 additional recommendations is bad. I am applying mechanical enginnering and I wanted to ask you guys what you think which extra recommendatuons I should send both of which show anecdotes, how I am different and more deep level than my teachers and counselor rec. A letter from a volunteer organization vs A letter from my manage at a garage (mechanical engineering)
    Thanks

What school? Sending multiple recommendations varies greatly. It depends on if more recommenders can actually add more substance or just reiterate the first recommender, and what the school is asking for.