To add more storage space you would go to your Events page, click Billing in the drop-down menu:

Pushing "Billing" should take you right to the "Overview" page. You can find "Add space" written in red letters:

By clicking the button, you'll get to "Upgrade your storage" page:

Then to the Subscription Purchase page, where you would apply your promo code, if you've got one, and click "Pay". Proficonf will redirect you to the payment page from there:

Did this answer your question?