Presenting Auditions

Hi there, please help...I saw SABC 2, will be hosting, Presenter's Auditions and am very interested. does anyone have advise on what to expect in auditions like these. What do you need to prepare, what kind of questions will they most likely ask you.
How should I dress and anything else I may need. please help, please...please....

Thanking you in advance.....
Precious