Workspace Owners and Admins can follow these steps to reassign a deactivated member's canvases and lists:

1. Click your workspace name in the sidebar.
   
2. Hover over Tools & settings, then click Manage members.
3. Click the   three dots icon next to the deactivated member's name.
4. Select Transfer canvas ownership or Transfer lists ownership,  then choose a new owner from the dropdown menu.
5. Click Transfer Ownership, then click Confirm.

Org Owners and Admins can follow these steps to reassign the canvas owner:

1. Click your organization name in the sidebar.
   
2. Hover over Tools & settings, then click Organization settings.
3. Click People in the left sidebar, then select Members.
4. Select View Deactivated Members in the top right.
5. Click the   three dots icon next to the deactivated member's name.
6. Select Transfer ownership of canvases or Transfer ownership of lists, then choose a new owner from the dropdown menu.
7. Click Transfer Ownership, then click Confirm.