Clans can Garrison in Any Main City & Big Town that is under their Organization without any requirement. Main Cities / Big Towns are any established settlement that is currently populated. Keep in mind that storyline events which leave locations abandoned or without resident entities affect if the location is considered populated or not. The list of such locations is as follows:
-El Verloon Outpost
-Gorge Town -Mystic City
Clans can still Garrison in other maps, but these have new requirements set upon them. They can Garrison via Encampments made by Leader NPCs of their clan (Of Any Profession, it does not need to be a Combat Leader) with the Condition that the NPC Leader must be present at said Garrison site. If the Clan wishes to change the location of their Garrison to another encampment, their previous one will be cancelled as the Leader now needs to stay at their new location.
Even though there are now two types of Garrison (City and Encampment), a Clan can still only have 1 Garrison at a time. This update was simply made to differentiate two types of Garrison. Encampments are more flexible since maps can have more than one location that can be set as an Encampment, locations that can work as these are any location within the map that can be used as a Shelter of some sort. The details of these can be explored to their fullest within the game, however there are examples like the Shady Jungle Tribes and the El Verloon Spire. Keep in mind that there are maps that normally have no valid Encampment locations, such as Crystal Snowfields. If a Clan wishes to Garrison at the Encampment of another, they must be given permission by a leader of that Encampment (Master, Deputy, or Captain during Wartime).
When changing a clan’s garrison outside of a combat situation, this is still done with a Brigadier NPC.