Hello Iryna, if this is the student version of the software I'm still waiting to find out whether or not it gives access to the payroll module. Pretty sure that only regular programs on trial or with a service plan or those using the Accountant's Edition with an active service plan have access to the icon you specified (the cheque creation screen).

All my classmates have an access to the icon I specified but me :(

So that's correct, the student version should have limited access to the payroll module (the paycheck screen should be accessible). Did you acquire the software and codes from the educational partner program website at https://www.sage.com/ca/about-us/education?

If so, then try going to the help menu from the main screen for options like Activate now, or update / check Sage 50 service plan. We could also try and schedule a callback, our support team should be available at 1-888-522-2722 to help with install issues (student version support is limited to install issues). Let us know where to reach you*