Normally you wet the grain for three days then dry for three days to germinate. Roast as you wish. Mash the grain at 150F to 165F, if it gets too much hotter you're going to kill the enzymes converting the starch to sugar. After the mash you'd normally add hops and boil the wort for an hour. Then cool, add yeast and honey (if you add yeast above 130F you're gonna kill it), and let it ferment a couple days at least. Then bottle.
What they made is likely to be pretty weak and sweet, which might be what they want! Of course if you add enough honey then that provides all the sugar for fermenting anyhow and you've made malt mead, which could be pretty strong.