Our lead engineer is the main admin for our Atlassian account, but I do most of the actual management of projects and content within Jira and Confluence. I'm finding myself running into access barriers that are making it difficult to carry out my duties - for example, I can no longer create Classic Template projects in Jira and am currently stuck with Agility, which is unacceptable for our current initiatives.
How exactly would one go about making a Jira or Confluence user into a full-powered administrator?