Navigate to User icon > Accounts.
Click the downward caret next to the email address of the calendars you want to connect.
Click the pencil icon labeled Edit next to the Connected calendars section.
Select the calendars you want Reclaim to check available on.
View of User icon > Accounts page.
List of available calendars when clicking the pencil icon labeled Edit.
A Google Calendar you have subscribed can only be a Connected Calendar for one Reclaim account. In such cases, the Calendar will not show up in the list.
You will not be able to de-selected already synced source calendar because it will be automatically classified as a Connected Calendar.