How to create a one-way calendar sync in OneCal
A one-way calendar sync copies events from a source calendar to one or more target calendars, in a single direction. Events created on a target calendar are not copied back to the source calendar.
To sync in both directions, either create several one-way calendar syncs, or use the multi-way calendar sync feature.
This guide will walk you through the process of creating a one-way calendar sync in OneCal.
Prerequisites
Before starting make sure you have the following:
- A OneCal account with either an active Free Trial or any paid plan.
- At least 2 calendars connected to your OneCal account.
- You are already logged in to your OneCal account.
Step-by-step guide
1. Navigate to https://app.onecal.io/
2. Click Start New Sync.

3. Give your calendar sync a recognizable title, for example: "Calendar 1 -> Main"
4. Make sure One-way is selected.

5. Click Next.

6. Choose the source calendar. This is the calendar the events are copied from.

7. Choose the target calendar. This is the calendar the events are copied to, and where the clone events appear.

8. Click Next.

9. Configure how you want events to be synced, in the Sync Configuration step. You can always change these settings later.

10. Click Start Sync.

11. Wait for the first run to finish, then click Go to sync dashboard to return to the Calendar Sync page.

12. You are done. Your one-way calendar sync is now running.