Hey @SoluOpen01666 thanks for the follow up! To be clear the URL parameters wouldn’t be require the use of the API as you are simply appending the date/time parameter to the end of whatever scheduling page you are sending. The /2024-05-24T01:00:00-04:00 in this case would be added to the end of a calendly link like this: calendly.com/example/example/2024-05-24T01:00:00-04:00.
As far as creating scheduling hours, date ranges, time intervals, and other specific criteria - those would need to happen within the Calendly app itself. You will need to follow our UI/UX in the web app to create those specific criteria.
An alternative to create a new event with specific criteria would be to use our api (learn more on this reference page: https://developer.calendly.com/api-docs/v1yuxil3cpmxq-create-one-off-event-type). You mentioned not wanting to use the API, but the only methods currently are the API OR using the application from a browser. Hope that helps!