Can Rise 360 accommodate two characters in a scenario?

Typically, the Rise Scenario block uses one character. That character asks the questions, and the user selects a reply. So you could have the character be the customer asking questions.

This post might give you some ideas for using more than one character in a Scenario block: https://community.articulate.com/discussions/rise-360/tip-multi-character-scenario-block 

• Be sure to check out the links provided by Tom in his comments.