Gotcha, done. For future reference, to add free quests like this, when you edit the location page, you'll see something like this:
==== Free Quests ====
<tabber>
|-|=
|-|A Certain Soldier's Pride={{Raids:A Certain Soldier's Pride}}
|-|Baker and the Merrymaker={{Raids:Baker and the Merrymaker}}
</tabber>
To add a tab for a new free quest, add another line of this: |-|Quest Name={{Raids:Quest Name}}
, replacing "Quest Name" as appropriate.
This will create a link to a (non-existent) page when you click on the tab. Click on that link and create the raid page, copying the example template from Template:BattleEventQuest. You can see Raids:Odenlicious as an example of how it works.