Offline stores are similar to conventional stores with the only difference that they can be left even when the account is not being used. This allows the player to have characters selling while playing another.
In order to use this type of store and play at the same time with another character, the characters must belong to different accounts.
To create an offline store you must first create a conventional store. Then click on 
“System” and, to finish, click on “Exit Game”:
System MenuImportant notes
- You can set up a offline shop in the same places as a normal shop: Cities, towns, harbors, etc.
- To set up a shop the character must be at least level 5.
- Players may have as many offline shops as they need.