Abstract: The object of the study is the information system for the formation of the student's electronic portfolio. The subject of the research is the organization of the differentiation of access rights for different groups of users: students, portfolio moderators and administrators. The rights, functions and interface of each user group of the information system are considered in detail. A mechanism is described that allows the Siberian State Industrial University Portfolio information system to define a new right for LMS Moodle, which gives the Moodle user the ability to view all categories of files in the portfolio, as well as a report on the group's activities. When creating an information system, the deduction method was used, in which, for a variety of particular features, a conclusion was made about the total population of the features studied, as well as a method for analyzing the existing 4portfolio software. The main result of the work is the implementation of differentiation of access rights in the information system “Siberian State Industrial University Portfolio”, due to which the plugin defines three roles: the user, the moderator of the portfolio and the administrator. The users are university students who can upload documents to the portfolio confirming personal achievements in various activities, and each of their actions is controlled by a moderator assigned to the group, which improves the quality of filling and avoids errors in the formation of the portfolio. To control the process of filling the portfolio in the information system "Siberian State Industrial University Portfolio" reports of various levels of detail are generated, reflecting the results of the work of both moderators and users. To realize the possibility of viewing the contents of a student portfolio by registered users of LMS Moodle, the Siberian State Industrial University Portfolio information system defines a new right in LMS Moodle.