You can add more User/Channels at any time during the free, trial period of the Standard Plan

1. From the menu, click Settings

2. On the Settings page, click on Manage Your Subscription

3. On the Manage Subscription Page, click on Add or Remove User/Channels

4. Select a number of User/Channels to add.  You can select additional User/Channels more than once.

Note: You will not be charged for user/channels until the the trial period ends and you have added your credit card information.