Be able to import CSV file to breakout rooms without email addresses

We often have zoom meetings with pre-assigned breakout room Names (like Poster 1 Josh Brolin as example). It is quite tedious to type these in one by one in the breakout rooms - I see there is feature to import a CSV file - but I get stopped due to it wanting Email addresses - it would be great to just be able to import a regular CSV file with text fields to avoid the extreme tedium/boredom of adding One by One poster room names etc (basically doing a whole lot of copy/paste - but seems the CSV import should do this for you). Thank for listening