Is Oham ruled by some kind of Statute?

Yes. "Oham Statute" was created in 2006-2008 and the whole of the work is ruled by its statements.

Oham Statute is mandatory for everybody.

Only in a very few cases, as quite very especial exceptions, has the Direction of Oham the power and authority of taking a decision disregarding of the rules stated by Oham Statute.