If you have a team in Trello, you can easily import your external projects' data (including your users ) from Trello to Nostromo.
To complete data import, you need to be in Admin role in Nostromo.
Choose Projects in Settings and use "Import from Trello" function provided there:
Go through the three quick steps in the wizard appearing:
- select team and boards you want to import,
- choose from your existing Nostromo projects or create new ones as destination of your cards,
- select users you will work together in Nostromo (users you select will be added to your team).