Hi Armand,
I found this on this forum: https://success.clarizen.com/hc/en-us/community/posts/203991468-Outbound-calls-any-examples-
You may also be interested with ResourceManagementQuery service (https://api2.clarizen.com/v2.0/docs/html/T_clarizen_com_api_ResourceManagementQuery.htm) which retrieves information similar to Resource Load page in Clarizen.
The documentation for Outbound Call action is here
Hope this helps,
Ophir