MultiDocs are an incredibly powerful new tool for mathematics teachers that can greatly improve your productivity. Start here for information on what they are and how they work.
Any teacher can use a MultiDoc to create a new version of a test, worksheet or exam. You do not need to know anything about using Efofex products like FX Draw and FX Equation
If you have used Efofex products before, you will have questions on how to move to the new system and what to do with your old documents.