Design.com
You can link to calendars from Bookingmood in Design.com.
Create a widget
You will need to create a widget in Bookingmood first. Learn how to create it here: Creating a widget.
Click on Embed and copy the oEmbed link. You will need this in the next step.
Link to the widget in your Design.com website
Click on Add Content.

Click on Booking.

Paste the oEmbed link in the Url field.

Save it.
🎉 You're done and everything is set! Changes you make to your calendar will automatically reflect on your widget.