Business Process technology has long been discussed in various business process methodologies with diverse perspectives. Among them, the discussions on were mainly limited only in effectively fulfilling functional, informational and organizational aspects. For enriching the discussion scope, from DEMO (Design and Engineering Method for Organizations) perspective, this research extends to capture both human interactions and human capabilities aspects in the business process and the relating modeling methodology is also provided. For contextualizing our proposal, RPA (Robotic Process Automation), as one of the typical new application in freeing human workers from tedious and repetitive tasks, is adopted as an illustration example of our artifact development. Also, our proposed modeling methodology is evaluated in a deep-dive field study with a Chinese Bank X to testify the utility in analyzing and identifying applicable tasks for RPA adoptions and eventually delivering the business process model.