Hey there. Both have quests associated with them. I would recommend looking up a guide, as it’s a little complicated to explain. That said, for DMT, you’ll need to launch into the arms dealer strike and go a specific path to find a distress signal, which should send you on your way ([url=https://www.polygon.com/destiny-2-guide-walkthrough/22286006/dead-mans-tale-exotic-scout-rifle-guide-destiny-2-presage-mission-secret-quest-season-chosen] here’s a link[/url] to the first article that can guide you more that popped up when I searched it). As for Hawkmoon, start by looking for the seasonal intro quest on the far left side of the moon directory. From there, you should have to go talk to spider/the crow on the tangled shore, who should introduce you to the Wrathborn hunts. From there you should be able to get the Hawkmoon quest.