Sorry, but I am RADICALLY against this type of operation. In my opinion, it devalues the whole management system certification process.
Franchising of CB's is a well known risk in the certification sector. The accredited ones at least have to follow (theoretically) the
IAF Mandatory Document 23, Control of Entities Operating on Behalf of Accredited Management Systems Certification Bodies. The non accredited, self-accredited or pseudo accredited ones don't have to follow anything, just the greed of their pockets.
I suspect, however, that you are late in this game. There are accreditation bodies, IAF signatories, established in the USA and Europe who have accredited dozens and dozens of certification bodies in the geographies you are seeking. As I said in another post, weeks ago, the commoditization and trivialization of the certification sector has finally reached the accreditation layer. After decimating trust in a good chunk of training, consulting, assessment, certification layers, the low-cost providers reached the accreditation layer of the sector. To repeat a phrase of someone who, many years ago, when a high ranking officer of the IAF wrote an article denouncing the damage to the certification sector if the price war, competition on price ONLY, would be allowed to fester, driving the whole sector in a downward spiral.
Nevertheless, good luck to you.