"Talk to the hosts" is a mission objective in Sequence 2 / Memory 02: Mister Walpole, I Presume?
Walkthrough
This objective triggers after you practice shooting the practice targets a bit.
At this point, you have a choice who to talk to
Speak with Woodes Rogers to receive a Shooting Challenge
Alternatively, speak to Julien du Casse to continue the mission.
Julien du Casse gives you a Hidden Blade
