The first part of the Icue button link is generated from the parameter CP_INSIGHT_EMAIL_URL.
You will find this in Administration Dashboard, Site Manager, Admin Settings.
This is usually in the format of https://my.corehr.com/pls/clientid/ in a production environment.
If the clientid is coreportal_abcp then the CP_INSIGHT_EMAIL_URL is https://my.corehr.com/pls/coreportal_abcp/
The middle part has i#locate/widget/ hard coded.
The last part is based on what system area was selected when configuring the Call-to-Action for the Icue.
The system area is usually a dashboard tab.
Icues are saved in ci_voxtalk_alert_setup and the system area is in the field link_to_system_area.
select alert_recipient_type, alert_header, link_to_system_area
from ci_voxtalk_alert_setup;
URL = cp_insight_email_urli#locate/widget/ci_voxtalk_alert_setup.link_to_system_area