As an Investor, you can allow other users to have access to your account by creating a "Proxy Investor". This does not create a separate account; it merely creates a second user name attached to the same account. The Proxy will be able to view the Investor's information in much the same way the investor does.
Once you are logged in, click on "Add Users" in your Manage My Account box. This page allows you to add an Advisor and/or to add a Proxy Investor.
An email will be sent to the proxy inviting them to log in using the user name and password you provided. Your Proxy Investor will have a similar page view to yours.