The simplest way to allow users to interact with your Formance stack is to invite them to your organization using fctl:
# if you have multiple organizations,
# you must specify which one you're using with the --organization flag
# e.g. --organization [OrganizationID]
fctl cloud organizations invitations send firstname.lastname@example.org
From the dashboard
You can also invite users to your organization using the organization management feature in the console.
This can be achieved by clicking your username in the top right corner, then clicking on "Organizations", and "Manage Environments".