Admin is where owners and admins run the account: billing, people, account-wide settings and your data. Everything in it applies to the whole organization, not to one project.

Getting to Admin

Click your account's name at the top of the sidebar, then choose Admin.
Or press ⌘J (Ctrl+J on Windows), type "admin" and choose Admin.

The page opens with a summary of your plan (owners and admins only), then has two lists: what owners and admins can do, and what only account owners can do. Each list starts with the people in that role, so anyone can see who to ask. Every account owner is also an admin, so owners appear in both. When the account is nearly out of storage, a banner near the top says so.

Who Can Use It

Owners see both lists.
Admins see the first list. Under Account owners they see who the owners are, to ask about anything there.
Members can open Admin, but it only shows who the owners and admins are, so they know who to ask.
Clients don't have an Admin link.

See Account Owners and Adding or Removing Administrators for the difference between the two roles.

What Owners and Admins Can Do

Manage people: opens the People page, to invite people, change roles or remove someone. See Managing People.
Add or remove admins: see Adding or Removing Administrators.
Account owners: see who owns the account. Owners can add or remove owners here. See Account Owners.
Manage companies and Manage groups: organize people into companies, mark client companies, and create groups for quick mentions and adds. See Companies and Groups.
Merge people: combine two profiles that belong to the same person. See Merging People.
Permissions: restrict who can edit projects and people, move or delete content, share public links, and chat privately. See Permissions.
Account logo: put your logo on the account button at the top of the sidebar. See Customizing Your Account.
Manage storage: how much file storage you're using and which files are biggest. See Managing Storage.
Message categories: the categories people can file message board posts under.
Templates: project and to-do list templates anyone on the team can use. See Project and To-do List Templates.
Rename project tools: rename a tool for every project, such as calling the Message Board "Announcements".
Voice notes: turn the record button for voice notes on or off for everyone.
Timesheets: the day everyone's weekly timesheet starts, whether weeks are submitted for approval, and the absence types people log time off under. See Timesheets.
Chat history: keep chat history forever, or delete lines automatically after a set number of days.

Message categories, tool names, voice notes and chat history are all covered in Customizing Your Account.

What Only Account Owners Can Do

Billing: your plan, payment method, and invoices. During a free trial this row reads Buy Thicket today, and on the Free plan Upgrade to a paid account. See Billing and Plans.
Rename this account: change the name shown across Thicket and in emails. See Renaming Your Account.
Security: require 2FA: make everyone except clients set up two-factor authentication. See Two-Factor Authentication.
Reassign someone's to-dos: move, clear or share out all of a person's open to-dos, across the account or in one project.
Access any project: add yourself to any project on the account, even one you weren't invited to.
Manage public items: see everything shared with a public link, and unpublish any of it. See Sharing Items with Public Links.
Trash: everything deleted across all projects, and deleted project templates, to restore or delete permanently. See Archiving, Trash, and Restoring.
Export data: download the account's data as a file. See Exporting Your Data.
Cancel account: switch to the Free plan and keep everything, or cancel and delete it all. See Cancelling Your Account.