You will need to ensure that the service users’ permissions in the group created for them. It will need to be able to see employees out on a private policy and also the permission to see who's out:

As As well as having this applied to users under the people data based on lifecycles:

You will be able to run the call using this call here.
Ensure to include the toggle for private policy - True:
This The date format to use YYYY-MM-DD for example 2023-03-06
Once you run the call you will get this information in the output for all requests within the date range.
By