Increase Duty List size?

[Mhaeric]

Several should appear as you complete the main story line but others are quests you pick up from various npcs and grand company

Pretty sure she's talking about the Duty Tracker, not the list of dungeons in her Duty List.

There's no way to change what is shown in your duty tracker at all, unfortunately. In an earlier beta version, we had the option to show and hide quests shown, but it was removed for open beta. I understand it was removed because UI and caused bugs with the tracker due to the stress it placed on the UI. I agree this was a nice feature to have, and hope they put it back in.