@Nagarjuna Saidu

1. You use a table layout in the UI and source it with pagelist

2. On clicking add member button, what you will be doing is, pass the index to the data page, and append that result to table layout pagelist. 

So in the data type you will have the sequential number against each record. 1,2,3....if not you need a column and maintain this sequential number, which we will be using as index. 

Now create a data page with list structure, sources by report definition and add param as index/seqno.

On click of add member button, append result from dpage to pagelist. 

AppendTo

. Members 

DpageList[index:param.index].pxResults(1) 

You need to set param.index before copying result. 

param.index= @LengthOfPageList(.Members) +1