Problem Definition

Currently users who have Edit permission will be able to delete any of the boards available. A new Delete Plan permission is necessary to allow users creating plans freely but restrict the ability to delete plans created by other users.

Suggested Solution

Add a new delete plan permission that automatically has Creator and Administrator in them. The creator has the option to give the functionality to a user/group.

Workaround

Update the Access control > Permission of the recently created Plan to only selected user/group.