Not natively supporting path movement in Buildbox at this time. However there is a small engine that you may be able to use to get this movement. See example file: http://seanuploads.s3.amazonaws.com/Patrol%20engine-1.bbdoc
Buildbox is the world's first software that truly allows anyone to create amazing games regardless of technical skill. Due to its unique user interface, making games becomes a fluid process that doesn't require any scripting, programming or software design experience.