For Team calendar:

For Unassigned Calendar:

This tutorial will show you to connect your Google calendar to your HighLevel calendar if you are receiving the following error: 

You need to have writer access to sync appointments to the selected Google Calendar. Please check with the Google Calendar owner in case syncing is required.

Step 1:

The owner of the Google calendar needs to be logged into Google and go to

Step 2:

Hover over the desired calendar then click the three-dot icon and select "Settings And Sharing"

Step 3: 

Scroll down to "Share with specific people" > Click "Add People" and add the email address of the Google Account that is synced in HighLevel > set the Permissions to "Make changes to events" > click Send to save

The Google calendar should now be in sync with HighLevel