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Change a member's role or remove them from Mammoth

Workspace Owners; Project Admins for people in their own projects · Updated 8 Nov 2026

You change roles and remove people in Workspace Settings → User Management. Workspace Owners can do all of it. Project Admins can add, re-role and remove people in their own projects, and everyone can leave or delete their own profile.

Who can change roles and remove people

ActionWho can do it
Change someone's workspace roleWorkspace Owners. Only an Owner can make someone an Owner or change an Owner's role
Remove users from the workspaceWorkspace Owners
Add users to projectsWorkspace Owners, and Project Admins of that project (from the project's Manage Users)
Change someone's project roleWorkspace Owners, and Project Admins of that project
Remove someone from a projectWorkspace Owners, and Project Admins of that project
Leave the workspace, delete your own profileEveryone, for themselves

Mammoth checks these on the server as well as in the app. Custom roles can grant some of them: see Create, edit and delete custom roles.

Find people in User Management

Filter by dropdown open with All, Invited, and No projects assigned, beside a user detail panel with project roles
Filter by optionShows
AllEveryone in the workspace (default)
InvitedUsers with pending, unaccepted invitations
No projects assignedUsers not yet added to any project

The search field beside the filter narrows the list by name, or by email for invited users. With no match you see "We couldn't find any matches for your search."

ColumnWhat it shows
NameAvatar, full name, email, and an "(Owner)" label for Workspace Owners. Click the sort icon to sort
Projects assignedEach project as a coloured dot, project name and role. Use Show more / Show less when a user belongs to many projects
Last activeRelative time (for example, "2 minutes ago"). Hover for the full timestamp. Pending and expired invitations show their own actions here instead

Add many users to projects or remove them at once

Owners tick users with the checkboxes to show the bulk action bar:

  • Assign to Projects adds every selected user to the chosen projects at once.
  • Remove from workspace opens Remove users from workspace, which lists the selected users. Confirm with Remove Users.

Selecting only yourself hides Remove from workspace. To leave, see Leave a workspace or delete your profile.

Open one person's side panel

Click a user row to open their panel on the right.

User Management table beside a side panel showing a user's workspace role and per-project roles, with Assign to Projects

The panel shows the user's avatar, full name and email, and their workspace role (Workspace Owner, Workspace Member or a custom workspace role). It also shows a "Joined" date ("Created at" for an Owner) and every project they belong to, under All Projects and Project Role. Assign to Projects adds them to more projects. A user with no projects shows "No projects assigned" and "Assign this user to a project to get started".

Change someone's project role

  1. In the user's panel, click the role dropdown next to a project name.
  2. Pick Project Admin, Project Editor, Project Viewer or a custom project role.
Project role dropdown for a user, with Project Admin, Project Editor checked, and View Roles & Permissions
RoleWhat they can do
Project AdminManage and configure project settings, share and delete
Project EditorAccess, edit, and manage project data and pipelines
Project ViewerView Data Library items (read-only)

Custom project roles follow, with their description. The change applies at once: "User project role changed successfully." View Roles & Permissions at the bottom of the dropdown opens the full permission list.

When in doubt, give Project Editor. Give Project Admin only to manage project membership, create Live Connections or change project settings. Use Project Viewer for people who only need to look.

Remove someone from one project

Click the trash icon next to a project to open Remove user from that project. It warns that the user will lose access to that project's files. Confirm to remove them. On your own panel the icon is a leave icon, which opens Leave the project.

Tip: Workspace membership is unaffected
Removing a user from a project removes only their project access. They stay in the workspace and can be re-added to the project at any time.

Make someone a Workspace Owner or remove them from the workspace

Click the user's workspace role at the top of their panel to open the role menu.

User side panel with the three-dot menu open, showing Make workspace owner and Remove User
OptionWhat it does
Workspace Owner / Workspace Member, then any custom workspace rolesPicks a role; the current one has a check mark. Making someone an Owner opens Make workspace owner, which warns that it grants full control; confirm with Make owner. Changing an Owner to Member opens Change workspace role; confirm with Change role
View Roles & PermissionsOpens the workspace permission list
Remove UserOpens Remove user from workspace. Confirm with Remove User
Remove user from workspace confirmation with an I understand checkbox, Cancel, and Permanently remove users button

A workspace can have several Owners, and making someone else an Owner doesn't change your own role. Each Owner has full control, including billing, user management, external keys and workspace deletion. On your own panel, the menu offers View Roles & Permissions, Leave Workspace and Delete Profile.

What happens when a role changes or a user is removed

  • Workspace role changes (Owner, Member or a custom workspace role) and project role changes (Admin, Editor, Viewer or a custom project role) take effect immediately. There is no grace period.
  • Removing a user from the workspace removes their workspace and project role assignments, so all their project access goes at once. Their account isn't deleted, and their memberships in other workspaces are unaffected.
  • Project Admins can remove users from their project without affecting workspace membership.
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