You may need to resend invites to employees for example if they lost the original email.
If you use the Personnel tab, then you can only resend invites to the people that appear.
For managers, you will see all staff that report to you. For all other staff, resend invites in the Organisation module.
For owners and admins, you will see all staff here.
Resend invites only works for "Pending" employees who are yet to accept their invitation and sign-in for the first time.
For non-pending employees, try: reset their password.
To resend invites go to:
Personnel > Pending > Filter > find employee > next to their name click the blue "Re-send invite"