Hired merchants have different guides

The regular store permit requires your computer to be on and logged into the Maple Story with your character present in the free market, only allowing you to chat. This is the cheapest permit and the preferred one if you have the computer resources and the money. If you do not have a stable computer and/or internet connection, this may not be the choice for you.
The hired merchant is probably a better choice If you have limited computer access. Though hired merchants have different styles and durations, they all have the same basic function, that is, to "sell" your wares for you. You do not have to be logged on or even present in the free market to make use of a hired merchant. Hired merchants have different "looks" that you can choose from, the most common of which, is a mushroom looking shop. There are also "robot" shops and coffee shops as in GMS. The hired merchant is the best option if you only have one computer and do not have continuous access to a computer, or a stable setup. The downside of the hired merchant is that it costs more and has to be reset at least once every 24 hrs.
5) After you've purchased the permit, you have to move the permit from your cash item list to your inventory. Double-clicking on the permit will place it in your inventory.
6) Once your permit is safely a part of your inventory, you need only double click on the permit when you reach a position in the game where you can open a shop. For example you locate a spot in the free market rooms. When you have located a spot, simply add a name for your shop and click open.