3D Floor Planner- Lock function

There needs to be a lock function in the 3D floor planner! All fixed items such as walls, windows & doors (ideally everything) should have the ability to lock once in place. Too many times I've accidentally grabbed a wall or a window when a product is near these things and I have to replace them. Such a pain! And once products & fixtures are placed, we should be able to lock those into place as well. Thank you!