Guild halls

Guild halls are special instanced zones for members of the guild associated. Upon creation of a guild, members gain access to the Standard Guild Hall. Entering a Standard Guild Hall is through a door in the north area of the Guild Lobby, off of the Plane of Knowledge.

Neighborhood Guild Hall
Guild members can also purchase Neighborhood Guild Halls which are placed in Player housing zones. Purchasing a guild housing zone is done with Daybreak Cash. You can enter the Neighborhood Guild Hall through a door in the north area of the Guild Lobby, off of the Plane of Knowledge. You can also enter it though the player housing zone it is placed in.

You can change the sex and/or race of some of the NPCs placed in the hall. This requires a Convoluted Assistant Appearance Augmentater.

There are four types of guild halls you may purchase:
 * Grand Guild Hall
 * Modest Guild Hall
 * Standard Guild Hall
 * Palatial Guild Hall

Guild portal
Officially known as the Guild Teleportation Device, this device already exists in the default Standard Guild Hall. In a Neighborhood Guild Hall, you need to purchase it in the Sunrise Hills zone.

"This device can only be operated with the help of a 'Friendly Guild Teleportation Assistant'. If the assistant is present this device will allow you to teleport to various locations."

Teleportation Assistant
The Friendly Guild Teleportation Assistant, known by the text over their head as Teleportation Assistant (Portal Crystals), sells items that are used to set the destination for the Guild Portal.

Purchasing one and handing it back to them changes the destination.

Combat Dummies
You may place in your Neighborhood Guild Hall and personal housing various combat dummies. They can be used to test combat abilities and parse damage. They are sold by Brent Harnak (Guildhall Accessories) in Sunrise Hills (housing zones) as "Decorative Dummy: xxx".

The Combat Dummies can have their level, armor class and body type modified. Combat Dummies have lore text that describe their intended level of power.

The NPC's name is indeed just the order in which it was placed. I wanted to make sure each dummy had a unique name so you could parse out the combat log text more easily.

The model determines what level and tier of stats the dummy has:

Azia: Original EverQuest

Beza: Planes of Power

Caza: Legacy of Ykesha

Dena: LDoN

Ena: Gates of Discord

Fana: Omens of War

Geza: Dragons of Norrath

Heda: Depths of Darkhollow

Izah: Prophecy of Ro

Jaka: The Serpent's Spine

Kala: The Buried Sea

Lena: Secrets of Faydwer (Tier 3)

Meda: Seeds of Discord (Tier 4)

Neza: Underfoot (Tier 3)

Ozah: House of Thule (Tier 4)

Paza: Veil of Alaris (Tier 1)

Qela: Veil of Alaris (Tier 4)

The February 25, 2015 patch added:
 * Decorative Dummy: Rena
 * Decorative Dummy: Sana
 * Decorative Dummy: Taza: The Darkened Sea