Determining the stimulus is the first step in experimental research to classify personality types based on electroencephalography (EEG), which is stimulated by a visual form known as visual evoked potential (VEP). Matching the personality type of workers to work activities is an organizational concern. The organization demands the concentration of workers to achieve work standards. Information system user interface is a visual form commonly seen by individuals working to carry out job descriptions. Interviews and observations were carried out on several workers as participants. The user interface design of the information systems used by them is the focus of this exploration stage. All participants involved are at the operational level. Their work activities are closely related to the processing of corporate data transactions. Activities of viewing, searching, entering, editing, and deleting data are their daily activities. Of these various activities, all agreed that the data entry process was an activity that required the highest concentration because the validity of the data was essential. Several data entry form designs come in a variety of forms. They were observed to see similarities to one another. The proposed stimulus is the general form of the overall observed data entry form design.