what happens on date posted for evidence in divorce case

hi,

My divorce case is posted for evidence.It is for my evidence. What is going to happen on that day?

What do I need to prepare for that day?

   How many approximate date I will get more for final order? Kindly let me know in sequence.

My interim custody appluication for my child is heard and order is passed. My wife also has started getting maintanance money.