What manager classes are required in a plugin?

I’m trying to figure out what is required in my new plugin by comparing the plugin generated by visual studio to the demo access plugin in the mips 2020 sdk.

What I noticed is the SystemProperties manager is missing in the solution created in visual studio. Is this an oversight or is it not needed?

Its hard to tell what is required in the plugin and what is in the demo access plugin because of the demo access server.

Is there any documentation that lists what are the minimum manager classes needed in a plugin?

Please click this link -

https://doc.developer.milestonesys.com/html/index.html?base=content_1.html&tree=tree_1.html

And please read Access Control Overview. Especially, the last documentation describes what the minimum manager classes are needed.