Advanced Inventory Mod 1.12.2/1.10.2/1.7.10 is added into Minecraft in order to improve the storage aspect in the game.
It aims to enable the players to upgrade and expand their inventory with 6 areas in total that include 9 slots for each of the areas. Moreover, the players are also able to add functionality to them by adding some unique items such as crafters or filters to them.

To start things off, you have to create an inventory upgrade and then place it in the slot that is below the crafting area. After that, you are able to open the advanced inventory by pressing the “R” key.
The mod is still in development so you can expect more unique features in the near future.
Feel free to download Advanced Inventory and enjoy its greatness.
How to install Advanced Inventory Mod:
Assure that you have already installed Minecraft Forge
Define the location of the Minecraft application folder.
On the windows, open Run from the Start Menu, write %appdata% and click to Run
Open Mac on the finder, press and hold Alt and click to Library on the peak of the Menu Bar. Open the Application Support directory and look for Minecraft.
Put Advanced Inventory Mod you have already downloaded (.jar) into Mods directory.
When you start using Minecraft, open the mod button, you will realize that Advanced Inventory Mod has been set up.