This master thesis analyzes the main processes and their sub-processes to handle new customer projects and describes in addition a tool to improve process monitoring and transparency. The first part of this thesis consists of a procedure for a general process modeling and describes the related methods. The second part consists of a practical execution of this theoretical procedure by the example of the AT&S AG. The focus is primarily on the whole order handling process of new customer projects and on the additional controlling of such projects to achieve a better transparency. As basis for this study the existing processes were analyzed. Afterwards all necessary processes were new defined through expert workshops and interviews. All these information were essential for the visualization of the processes with an applicable tool, which was done accordingly. To get a general overview at the beginning, the whole process was roughly and afterwards in detail defined. After that, this current situation was critically analyzed. In addition a tool for a better project monitoring and transparency was created. In order to measure the process appropriate key performance indicators named KPI’s were defined. These KPI’s were furthermore graphically visualized, to get a better overview. At the end the main goal to improve the process transparency and the goal to monitor the whole project were achieved.