Good day Boston, Thank you for your answers.

  1. The thing is that I’m trying to invite each person that has been out of school for each iteration of 5 years, so the person that left school 5 years ago, 10 years ago, 15 years ago, and so on until the year in which the school started so there could be people that left 45 years ago or 60 years ago.
  2. I think I can manage to do this when a person signs up with some parameters but why do you say it should be a backend workflow? How does this help?