To remove a colleague from your Karbon account, you will need to be an account Admin.
On the main menu, click Settings > Colleagues and then select the colleague you'd like to remove.
You'll then see the colleague's profile.
Click on Archive User.
Choose the colleague who will own the removed colleague's assignments.
Click Next
A Window will come up with a list of reasons why you are removing this user
Click Archive User & Reassign Items
The colleague will be removed from your Karbon account.