For subject-specific counselling, see: https://www.uni-wuerzburg.de/studium/zsb/info/fsb/

Admission to a Master's degree programme requires a Bachelor's or an equivalent academic degree (such as Diploma degree, State Examination). In addition, specific skills in areas relevant to the Master's must be demonstrated. The Master's programme in question also requires applicants to pass an aptitude test. Details of the admissions procedure and what knowledge and skills are required to what extent (ECTS points) can be found in the specific course descriptions: http://www.uni-wuerzburg.de/fileadmin/32020000/Ordnungen/UEbersicht_Master-Netz.pdf
For information on the degree course and the admission requirements, see the information page of the department (admission website):

Students must apply by the due date! Information regarding deadlines and procedures can be found here: http://go.uni-wuerzburg.de/master