Within the Personal tab, navigate to Configuration.
Select “Add Board” from the “Personal Kanban Boards” section.
Give your Board a name and prefix. Save & Close when done.

Your Board has been created. Close and you will return back to your Work tab:

The Board will now appear in your drop-down list

Select your Personal Board and then "Add Item" to create items to allocate against it

Enter your item data and “Save & Close”

The item will now appear on your Work board