You need: The dashboard’s owner, or the workspace owner
Steps
1
To transfer ownership: from the dashboard’s ⋯ menu, choose Transfer ownership, then choose the New owner.
2
Choose whether you stay on as an editor with Keep me as an editor.
If you don’t, and you have no other share, you lose access to the dashboard straight away.
3
Press Continue, then Transfer ownership. You and the new owner get a notification.
4
To delete: from the ⋯ menu, choose Delete dashboard, then confirm in the Delete dashboard? window.
Deleting a dashboard can’t be undone from the interface. Its widgets and shares go with it; the records themselves aren’t affected.
How it works
The new owner must be active, have the dashboard view permission, and not be the current owner.
The previous owner gets a notification even if they transferred it themselves, and the new owner gets one saying they received it, in the “System” tab (see When you get a notification, and why).
Deleting removes the dashboard from its folder, and from everyone’s favorites and pins.