"by one's assistant" — Kollokationen-Wörterbuch Englisch

by one's assistant Kollokation
Automatische Übersetzung (wir garantieren seine Korrektheit nicht): przez czyjś asystent
  1. by Präposition + assistant Substantiv
    Normale Kollokation

    In the episode, Ron is forced to handle 94 meetings in a single day due to an error by his assistant, April.