This panel appears because many operating systems require program code and data to be stored in different locations. The data on such machines need to go into an area where the user has the rights to create, read and modify files.
For the TQ Client and TQ Admin programs, the only data that will be changed by users is a small properties file.
However, the TQ Server program creates and maintains a database which could grow into many mega-bytes depending on the size of the student population. Some care, therefore, should be given to deciding where this data is kept.