This documentation is not using the current rendering mechanism and is probably outdated. The extension maintainer should switch to the new system. Details on how to use the rendering mechanism can be found here.

Step 3: Create and Configure Record Storage Folder(s)

It is highly recommended to create a distinct sysfolder structure to store your calendar records.

For certain actions (e.g. notification or processing ics files), the extension needs some typoscript information to work properly. In the pageTS of your event / calendar storage sysfolder you need to define

options.tx_cal_controller.pageIDForPlugin = {page id where a calendar base plugin is
        included / the typoscript options for plugin.tx_cal_controller can be found}

This configuration is extremely helpful for users of the new recurrence model as it allows that the recurrence index is generated or updated whenever a recurring event is saved.

If you want to clear cached pages whenever a record is saved or updated, please see

TCEMAIN.clearCacheCmd = { ... }

in the TYPO3 core TSconfig reference.