New time & expense or full users should receive an email invitation with a line: "Please accept this invitation to activate your Clarizen account and set you username and password." The paragraph under that should have a default username, usually usually firstname.lastname, with the option of choosing a password and username when you login. Either of the links bring you to a login screen that will prompt the user for setting a password. There is no temporary password sent. If this is not the case, please open a ticket and we will research.