Did you look at the charting solutions FAQ that I gave you the link to? Here it is again.
All these solutions work the same way. You capture the data that is reported by your device, and you set it up to automatically plug into one of those charting solutions. The topic describes the various solutions, the cost if any, and usually has a couple of sample screens. Those are the ones the community members mostly use. ThingSpeak is one of the options covered in that topic. 