How do I switch from the monthly to the yearly subscription?

You can switch from the monthly to the yearly subscription anytime you want. The yearly subscription will start from the end of your current billing month.

To switch, go to the "Your company account" tab in the settings, and click "Switch to" in the yearly subscription box. You must be administrator in Scrumwise to do this. To get a quote first, fill out the form in the dialog, and then click "Or, request a quote" at the bottom of the dialog.