Open Google Calendar: Go to calendar.google.com and sign in with your Google account if you haven't already.
Select Your Calendar: On the left side of the screen, you'll see a list of calendars under "My calendars." Click on the three dots (more options) next to the calendar you want to share.
Choose "Settings and sharing": From the dropdown menu, select "Settings and sharing."
Share with Specific People:
Under "Share with specific people," enter the email addresses of the individuals you want to share your calendar with in the "Add people" field.
Choose their permission settings from the drop-down menu to the right of their email addresses. You can give them permission to "See only free/busy (hide details)," "See all event details," or "Make changes to events."
You can also add a message to the invitation email if you'd like.
Shareable Link (Optional):
If you want to share your calendar with anyone who has the link, toggle on the option labeled "Get shareable link."
Choose their permission settings from the drop-down menu to the right of the link. You can give them permission to "See only free/busy (hide details)" or "See all event details."
Send Invitations: Click on the "Send" button to send invitations to the individuals you've added or to generate the shareable link.