Metal fight tournament rules

I was reading the metal fight tournament rules and couldn't quite figure out if mode changes were allowed. If they are, are they allowed during a match or can the change only occur between them?
These kind of questions belongs to this sub-topic Beyblade Hobby Q&A.

But, to answer the question you're allowed to change mode of the track between between rounds before the round begins or spin direction if the Metal Wheel is a dual spin.