[Modding][Question/Request] Trade Resource

Is there a way to limit the number of trade resources (on planet) generated on a map?

Examples:

Map Size: Tiny
Resource type: Helios Ore
Min resource generated: 4
Max resource generated: 8
Etc.

Map Size: Large
Resource type: Techapod Hive
Min resource generated: 20
Max resource generated: 30
Etc.

*

Is there a way to limit the use (bonuses) of a trade resource to a specific civilization?

Only the X civ and the Y civ can have the bonuses generated by this type of trade resource (the others civs can trade them, but they gain no bonuses from the resource).

Resource Type: XXXXXXX
Can only be used by Civs: X, Y



***** If that is not possible, consider it as a request. *****