Apps related to Odoo it's calendar/appointments features:

• online_appointment_locations: allow setting an online URL per employee

Adds support to set an online URL per employee. This way you can use URL's to meeting rooms from Hangouts, Zoom, Microsoft Meet etc.
This allows the "website_calendar" module to be a little more future-proof by allowing online (call) URL's:

When the employee has an "Online appointment URL" set we will insert this as the location into the e-mail sent to the customer.
If no URL is set on the employee we will fallback to the default "Location" set on the online appointment type.

Note: this module depends on "website_calendar" which is an enterprise app. Make sure to also at least be on the commit https://github.com/odoo/enterprise/commit/fcb8139af0f032b56e79426744b554f4cc5766e1 in which we introduced a change to allow overriding this.