If your character is Level 90 or above, you can find the Guild Director in Twin City (399,394) and talk to them about setting up a Guild. It costs 1,000,000 Silver to setup a new Guild.
Guild Leader: Guild Leader is the head of a Guild that is entitled to manage the Guild. The Guild Leader also has the right to disband the guild.
Deputy Leader: Deputy Leader has partly privilege of managing Guild and can recruit members.
Branch Manager: The Branch Manager has the privilege of managing and disbanding the Branch.
Members: Guild members can quit the Guild by donating 20,000 silvers.
Passing Guild Leadership
The Guild Leadership can be passed to any online members.
To pass the leadership, the Guild Leader can go to Guild Director, select "Pass my leadership", enter the name of the member whom you want to pass to, and click on OK.
How to create a Branch:
To create a branch, there should be 500,000 Guilds Funds at least in the main Guild and the 'planned' Branch Manager should be level 70 or above.
Note: The name of the Branch cannot be over 6 characters.
Dominating the Guild Area
The Guild that knocked down the Guild Pole will dominate the Guild area when the Guild War is over.
The Leader of the Guild which won the Guild War can utilize Guild fund to buy Guild Teleporters and place them wherever he/she wants.
Guild Members can use the Teleporters and the Training Ground without any charge while non-members who train in Training Ground or use Guild Teleporter will be asked to pay some money, and the money will be deposited as the Guild Fund.
Consuming Guild Fund
The Guild Fund can be used to offset the Experience lost when a Guild Member is killed.
The Guild that fails to dominate Guild Area: A Member's contribution can reduce the 10% Experience lost after he/she is killed.
The Guild that dominates Guild Area: A member's contribution can reduce the 20% Experience lost after he/she is killed.
Winning Guild can spend 500,000 Guild Funds to summon Beast Guard and her beast.
Beast Guard spawns a Guild Beast which has high defense at 21:00 every day. Everybody can fight it. Once you kill it before 22:00, you'll get a Dragon Ball. It drops only one Dragon Ball a day.
If nobody kills Guild Beast until 22:00, the Guild Leader or Deputy Leader who has won the Guild War can get a Dragon Ball from Beast Guard. First come, first served.
Note: Beware that you must claim the Dragon Ball before 24:00, otherwise you'll lose the opportunity.
The Leader, Deputy Leaders and Branch Managers of a Guild can all build their statues in the Guild Area.
Find NPC Guild Controller (Twin City 350,337) and buy a Statue Scroll at a price of 50,000 Silver from her.
Talk with the NPC Guild Controller again and she'll teleport you to the Guild Area. Go to the center of the Guild square, stand in front of the dado for Statue.
Right click on the Statue Scroll, then Statue window will show on the left side. According to the prompt select a pose that you like and click on the OK button.
Now your statue appears before you.
Note: If the Statue is attacked, it's durability will drop down. So long as the durability falls to zero, the Statue will disappear.