You do need to make configuration changes to enable user defined processes - this should be mentioned in the new user guide.
Also, note that this feature is optional - you need to pay for it. If you hold an existing license, the feature will not be available unless you pay for it. If you want to see how it works before paying, you need to install the evaluation version separately and test it there.
As far as paying for the license is concerned - you must have paid for your license more than 12 months ago, so if you want to update to the latest version you need to pay the update fee.