Requirements:

Map Editor
Scripthook V
Scripthook V .NET

Installation:

1.Drag and drop the file to the Gta V main directory/folder
2. When in game,Press f7 (with Map Editor) choose Load map/File Chooser and find Families Gang Hideout.xml and choose it. Better option is dropping the file to the AutoloadMaps (create the folder with the same name) located in your scripts folder.

Location: Chamberlain Hills.