Thx. If you only have five minutes, the important bits about how to use a combination of money belt and 'decoy' wallet are at about the six minute mark. If you want to avoid the sales pitch about silk money belts, go straight there.
If you do want to have a genuine decoy, carry a packet of travel wipes in your hip pocket, and keep your wallet in a zippered pocket on your shirt or the front of your trousers. Not covered that well in the video, but if you need to move money from your money belt to a wallet, avoid doing it in public. Find a private place like a toilet, and do it there. After all, a concealed money belt is pointless if you keep revealing it in public - you might just as well use a waist bag.
My own approach on the CF was to keep my money belt in my pack during the day, and only use it in the evenings when I was walking around a town.
Regards,