An induction document is a document related with the welcome or preparation of someone into a new job. A procedure is a document that explain how a task or set of tasks are done. A procedure can be used by anyone at any time, whenever there is a doubt. I use to say that a procedure, even for those with a lot of experience is like a map in the glove compartment of a car, or in a smartphone. Normally, we do not need to use it, but sometimes it is very useful.