Once you have completed your Portfolio, you will land on the Review Portfolio page. This page shows you how the information in your Portfolio will appear to the employer.
There is no ‘Next’ button because this is the final page of your applicant portfolio.
Arriving at the Review Portfolio page does not mean you have applied.
For your Portfolio information to be submitted to an employer, you will have to conduct a job search and apply for the posting you are interested in.
In order to apply for a posting, click on Search Jobs in the Job Postings tab of your account.