To disable a User account uncheck the Current Employee? check box for that user.
Click the organization name in the upper left corner of the application.
Click the Gears icon .
Click the Users link.
Click the Edit button for the User you want to disable.
The Edit User form will open, uncheck the Current Employee? checkbox.
Click the Submit button.
Note: the user will remain in the system, as well as any associations that user has with Analyses, TLFs, or Datasets. However the user will no longer be available in drop down menus for new assignments.