A board owner is either just the person who created the board or the users the board creator chooses to have board permissions. Once you set board permissions to "Only board owners can make changes", these users will be the only users that can make changes to the board.
- Click on the people icon on the board to the left of the Hamburger Icon Menu
- From the list of team members, click the crown to make him/her the owner of that board
**NOTE: Only the initial owner of the board can add other owners onto the board