As well as following this course I would recommend a visit to https://atlassian.swoogo.com/summit20_webinar_series/remote_on_demand and watching the newly released webinars starting with Jon Kern "Agile Jira configuration, or how not to f*** your customers". To hear of some of the nightmares that administrators have found with Jira configuration. Hopefully this will help you avoid some of the challenges when Administrators do not consider all the implications of that "one little change".