In Ark you can control the Platforms & Platform Saddles on your dedicated server and in single player as well as non-dedicated sessions. These different settings allow control over the placement of turrets, the number of structures, and the maximum number of platforms & platform saddles allowed on the server.
To control the Platforms & Platform Saddles in Ark you have 3 primary options. You can use PerPlatformMaxStructuresMultiplier to increase the number of structures you can build on an individual platform. For example settings PerPlatformMaxStructuresMultiplier to 2 will double the number of structures allowed. There is also the MaxPlatformSaddleStructureLimit which sets the maximum number of platforms & platform saddles allowed on the server. The last setting is OverrideStructurePlatformPrevention which if you set to true will allow turrets on a platform saddle.
Example of settings in GameUserSettings.ini
Example of settings in Game.ini