Users: Experience for inviting multiple users is confusing

[mmtr]

Issue reported during walkthrough: p58i-iKo-p2

• It's a bit confusing that we select a button that says "Add a team member" (singular) but we land on a page that says "Add team members" (plural).
• It's also weird to automatically add a new row with another email input after starting to write an email. It should be done after clicking on a more explicit button like "Add another user"
• Furthermore, it's unclear if the contractor checkbox applies to all users or only to one of them.
• There is also no way to remove a row if you accidentally end up adding many users by mistake
• The validation is bit janky too when there are multiple email inputs, because validation errors appear on all inputs even if they are empty.

[github-actions[bot]]

OpenAI suggested the following labels for this issue:

• [Feature Group] User Management: The issue pertains to the experience of inviting and managing multiple users, which falls under user management functionalities.
• [Feature] Signup & Account Creation: The confusion around inviting multiple users and onboarding them relates to the processes involved in creating user accounts.
• [Feature] User Interaction & Engagement: The issue highlights user interaction problems when adding team members, addressing how users engage with the invite functionality.