The Roving Official - Rule Explanation (20.1a)

Players must not unreasonably delay play when seeking help with the Rules during a round:

If a referee or the Committee is not available in a reasonable time to help with a Rules issue, the player must decide what to do and play on.
The player may protect their rights by asking for a ruling in match play (See Rule 20.1b(2)) or by playing two balls in stroke play (See Rule 20.1c(3)).