How can I make changes to my subscriptions?

Assuming you are logged in to Pamoya Beta.
Navigate to your account page by clicking "My account" in the main menu. Your account details and, above them, a tab bar are shown.
On the tab bar click the "Notifications" tab. A status overview of your subscriptions is shown. It tells you how many active subscriptions you have and your default sending method and interval for new subscriptions. It also shows you a list of links for administering your subscriptions, for editing your default sending method and interval, for temporarily disabling all your subscriptions (when you are away on a holiday), and for canceling all your subscriptions.
Just below the tab bar a second, secundary, tab bar appears. Click the "Subscriptions" tab on that secundary tab bar or the top link in the list of links.
You can make changes to the status, the sending method and the sending interval of selected subscriptions.
Just select an update option from the drop down list and select the subscriptions you want to update and click "Update".
You can also make changes to an individual subscription by clicking "edit" behind it. To drop or cancel an individual subscription, click "drop".
On the "Pamoya Groups" tab you can further customise and detail your subscriptions. It allows you to activate notifications and set the sending method and sending interval per content type.