Cover pot, transfer to oven and roast for up to 4 hours. Check on it after the first 2 hours and then, an hour later. Once it’s been cooking for 3 hours, you may want to check it more often.
For example, some recipes for Sauerbraten, a German beef roast ... I like to make some sort of starch to go with the pot roast. Mashed potatoes work really well with the gravy and meat, so ...