You can create the actual University Calendar for your study by yourself using your 'Visitenkarte' in PLUSonline, Service, 'Vorlesungsverzeichnis'.Save it as Pdf or print it.
In the University Calendar you will find a compendium of all courses and detailed descriptions concerning contents, entry requirements and routine of the lectures.
A valid registration to the courses and exams has to be done with the webbased software PLUSonline.
For lecture/exercises, exercises and seminars the criterias for a registration to a course are the same as you find in PLUSonline as prerequisites for examinations according to the curriculum.
Find more Informations about PLUSonline in https://online.uni-salzburg.at
See below the link to the different parts of the calender (german).