iOS Question Some question about Designer after try B4I

Hello everyone, after try b4i beta designer , i like very much, same to b4a
But i am new apple developer so i have some questions about new property and need some example :

1. Panel properties : (which i highlight)


2. Slider properties : (which i highlight)



3. Main panel properties : (which i highlight)



And final is need an example for scroll view object , how to use this object