When you invite users to Upsales, they receive an email with instructions on how to access their new Upsales account.
Until they accept the invite, the email associated with the user appears under Settings → Account → Users & roles → Active invites:
To copy the invite URL, hover over the active invite and click the URL icon. You can send the link manually to the invited user for them to create their new account, if they for some reason have not received the invitation email.
To delete the active invite, hover over the active invite and click the trash icon: