In my preview, if "Rejected" is added as the status, a  field appears for a reason to be entered.  This is done using two tables that interact with each other.  Rows in the second table are hidden until the status is rejected.

Here is my the section in preview mode...

If I actually run the process, the rejected line will not appear as soon as rejected is selected.

I received the code for my charts from another post...https://answers.laserfiche.com/questions/115901/Referencing-table-fields#repliestomain . 

At first I thought it was not working for me; but, eventually, I realized I was running the process each time I tested it.  When I tried it in preview mode, it worked perfectly.

Here is a snip of the process form...

The rejected reason row will not automatically appear.  It will only appear if the "add" button is selected. I tried a work around by adding a row automatically. This worked, but it triggered too many rows. Since this was adding so many rows, I decided to remove it.

I used the code (now removed) from the following post to add the rows automatically...https://answers.laserfiche.com/questions/117703/automatically-add-row-to-table#repliestomain .

So, if you have any ideas, I would appreciate it. 

Thanks.