The Salt variables page is a part of the Salt plugin and will only exist if this plugin is installed on your orcharhino.
The Salt variables page can be accessed via the configure menu:
Configure > Salt Variables
The Salt variables page forms a part of orcharhino’s Salt support. Salt is one option for configuration management within orcharhino.
On this page you see all configured Salt variables. Each Salt variable is associated to a Salt state in which the Salt variable is used.
Refer to the Salt usage guide for more information.