I need help in configuring memento to have use multiple mnesia databases instead of one

I am building a project that requires me to have multiple databases for each client using the system. Each database has it’s own set of tables and records. I need help in configuring memento to create a new database for every client and then have it perform actions on the necessary database. Say I want to be able to add a record to a specific table in database A for client A, and then a record to another table in database B for client B.