How to embed Delenta calendar in WordPress.com
You can add a hyperlink to your scheduling page on a WordPress.com site and invite visitors to schedule with you.
While editing one of your pages, highlight any text and select the Insert/edit link button in the toolbar.
Paste the URL to your Delenta booking calendar.
How to embed Delenta Calendar in WordPress.org
To embed Delenta calendar on a single page of your site:
Sign in to WordPress and visit the admin area.
Go to Pages and decide which one you would like to edit, then select the + to add a new block.
Choose a Custom HTML from the Formatting drop-down list, and paste your Delenta embed code.
Preview Changes to ensure the embed cooperates with your website's theme before selecting Update to save.