The Guest role in Nifty is great for clients and other non-team members. While Guests' permissions are scaled back from those on your team, they can still participate in a project without joining your team-chat or team subscription!
Be sure to also check out how you can work alongside Guests while iterating internally by hiding Milestones and Tasks!
Inviting a Guest
Guests are invited to projects directly.
Once your project is created you may invite guests in your project's settings. Guests can be invited with their email address or by simply generating an invite link that you can share with them.
Here is a visual guide to Guest permissions on Nifty.