If you want to know how NOT to do it, look at the BCashers trying to do this in some Caribbean island nations (e.g., St. Kitts, which is from where Ver now has a passport).

They target some merchant, get them to agree to install their app on the merchant's existing point-of-sale device (or their personal phone, for a mom & pop, or whatever).

And the next thing you know they are plastering BCH stickers everywhere inside and outside the joint and then proceed to "interview" (recruiting, hard sell, ... otherwise known as pestering) the shop's customers (e.g., diners in the restaurant) giving them a small amount of "free" BCH, and then pressuring these victims into buying their shitcoin (from their shitcoin exchange) and to use that to pay the shop at checkout.