Invite your team as Admins or Members
Invite people to a workspace from Manage Team and give them the Admin or Member role. Everyone signs in with their own account.

You can now bring teammates and clients into a workspace without sharing a password.
Open Manage Team, enter an email address, choose a role and send the invite. Admins help run the workspace. Members work with forms and submissions day to day. The owner, who created the workspace, keeps control of ownership and deletion.
Seats depend on the plan: 1 on Free, 2 on Starter, 5 on Premium and 20 on Business. The Members list shows how many you've used, like 01/05.
Not sure which role to pick? Start with Member. Promoting someone later is easy. Taking access back is the awkward part. Details are in Team Roles and Permissions.