Within Teamwork Spaces, you can delete a user via the site-level People area.
Note: Only site administrators can access the People area and manage users.
Select the All Users tab from the left navigation pane.
In grid view, click the three dots in the top right of the relevant user card and select Delete user.
In list view, click the three dots to the right of the relevant user and select Delete user.
This will open a confirmation modal where you can proceed with deleting the user.
Note: Deleting a user from your Teamwork Spaces site will also remove them from any other Teamwork products you have enabled for the installation.
For more information, see: Working with the People Area