Sorry, but it feels like you are dodging the question.

Every time someone asks you, you set the job as done and never explain how to use it. A few lines of text to update the manual would be nice!

Thank you, works great so far except being painfully slow to use.

For placing: Sneak and rightclick, drag out a shape, right click again to commit.

For carving: you want to use the Smart Chisel, which uses roughly the same system, but you leftclick for it (no sneak).