My opinion, don't waste time with Multicharts. It is a ressource hog and with lots of bugs and limits. Their developer is not as competent as is the developer of AmiBroker.
And no, it is not free of charge. It was a marketing gag by them as it is always the case with their developer. So they are not honest on top of that but they rather purposely fool and disrespect their user base in continuous mode.