On this site you will find the most important things to get started with the layout design.
Product help pages: https://www.planning-helpers.com/support/agenda-tutorial/
Product main page: https://www.planning-helpers.com/helper-add-ins/agenda-helper/
You do not need admin right for installing the add-in. Here is help for installing the Agenda Helper files:
https://www.planning-helpers.com/support/agenda-tutorial/installing-the-add-in/