To use DaySchedule integration in n8n, start by adding the HTTP Request node to your workflow canvas and authenticate it using a generic authentication method. Once connected, you can make custom API calls to DaySchedule to query the data you need using the URLs you provide, for example: after setting up the connection, you can use the HTTP Request node to create new scheduling records in DaySchedule by sending a POST request with the appropriate JSON payload. To update existing records, utilize a PUT request with the necessary parameters, ensuring to include the specific record ID in the URL. Additionally, for retrieving data, a GET request can be employed to fetch scheduling details, allowing you to utilize this information in your subsequent workflow operations.