You can enable the “Create your account” button in portal customization parameters.
Then, go in Portal
> Advanced parameters
> Register new account
:
Module: Choose the backend to use to create the new account.
Page URL:
URL of register page
Validity time of a register request: duration in seconds of a new account request. The request will be deleted after this time if user do not click on the link.
Subject for confirmation mail: Subject of the mail containing the confirmation link
Subject for done mail: Subject of the mail giving login and password