ToDos are not usable because of ''Assignment for Event XX" todos which are automatically created

How do I turn off auto-creation of todos for events coming from sales process?

  1. Create Sales task (it gets created TODO = OK)
  2. I create Sales Event (it gets created todo = Not Ok)
  3. Go to ToDos, to see what to do next, and there are hundreds of Assignment Event todos, and it is impossible to find real todos created manually or as part of 1.

Please, how to prevent this? Is there a better way, to follow-up on the tasks? It is not possible with Todos.