Two-way syncing allows you to synchronise your Halaxy calendar both ways between Halaxy and your iCloud, Google, Outlook, Exchange and Office 365 calendars.
The difference between one-way syncing and two-way syncing is that in two-way syncing, you can edit your Halaxy calendar from your external calendar and have the changes appear in Halaxy. This gives you complete freedom to add and cancel your appointments even when you're not at your computer.
Two-way calendar syncing is available for free for the first 30 days after activating your subscription. After that, the price is 25 credits per month. You can cancel your subscription at any time.
To enable two-way calendar syncing:
Click Settings > Integrations.
In the Calendar Integration section, click Buy Calendar Synchronisation.
Click Purchase. Two-way syncing is now enabled; the first 30 days are free.
In the Calendar Integration section, click Add Calendar Synchronisation.
Click the calendar service you wish to sync with Halaxy and follow the prompts.
RESULT: On your external calendar service, you will see a new calendar that begins with the prefix "HX_". This is your Halaxy calendar; any appointments you make or edit using this calendar will sync both ways between your external calendar and Halaxy.
Please note that it can take a few hours before you first see appointments start to sync across.