What operations are possible on archived teams from the owners and members?

When a team is archived, owners retain the ability to make certain administrative changes, such as restoring the team or deleting it, and can still manage some settings. Members, however, primarily have read-only access to messages and files.

Members and owners cannot typically chat in an archived team, as archiving renders the team read-only for most user activities.

Owners and members cannot upload new content to an archived team; the content becomes read-only.

"Members are most privileged users" is incorrect; owners always have higher privileges than members in a Microsoft Team.