To add a turf on top of another turf in Dream Maker's map editor, hold control (ctrl) while clicking on the spot on the map you wish to place the turf.
For future reference, you may wish to post topics related to code issues in Developer How-To as this forum is more-so for software, site, and non-code related issues and problems.
For future reference, you may wish to post topics related to code issues in Developer How-To as this forum is more-so for software, site, and non-code related issues and problems.