The first thing you have to do is to open the link below and download Script Hook V.
http://www.dev-c.com/gtav/scripthookv/.

- Open the link below and download the Community Script Hook V. Net.
 
https://www.gta5-mods.com/tools/scripthookv-net

- Open the following link and Download the NativeUI.
 
https://gtaforums.com/topic/809284-net-nativeui/.

- Open the link below and download the Map Editor.
 
https://www.gta5-mods.com/scripts/map-editor

- Open the link below and Download Modern Art House.
 
https://www.gta5-mods.com/maps/modern-art-house

- Here are the downloaded files.
 

- After that, you will need to create the scripts folder in Grand Theft Auto V directory, if it’s not there.
 

- Open the MapEditor downloaded folder.
 

- Copy the folder/files except NativeUI.dll.
 

- Paste the copied files into the scripts folder (Grand Theft Auto V directory).
 

- Open the NativeUI downloaded folder.
 

- And copy the NativeUI.dll files.
 

- Paste the copied files into the scripts folder (Grand Theft Auto V directory)..
 

- Open the ScriptHookV_1.0.1604.1 downloaded folder.
 

- Then open up the bin downloaded folder.
 

- Copy the files except NativeTrainer.
 

- Paste the copied files into the Grand Theft Auto V directory.
 

- Open the ScriptHookVDotNet downloaded folder.
 

- Copy the files except LICENSE and README.
 

- Paste the copied files into the Grand Theft Auto V directory.
 

- Open the MODERN ART HOUSE downloaded folder.
 

- Copy Expanded ObjectList and ObjectList files .
 

- Paste the copied files into the scripts folder.
 

- After that, you have to copy the arthouse file and paste this file into the map folder in the Grand Theft Auto V directory (if its maps folder is not there, create one).
 

- Launch the game, explore and enjoy.
 
