Help Can We Change The Rules?

[CIRRUSmd]

Have you ever noticed the match rules of each league?

I found there are several different rules in some leagues.

In English, there are no player restriction, while in Germany and France there are the rules about the age of the player.

This is what i want to ask,

Can this rules be changed?

If can, can someone tell me how to change the rules?

Thanks Before..

[BatiGoal]

Afaik these can't be changed. Why would one want to to risk messing with that anyway.