Hi Asif,
You can use table widget and right click on table and select Insert Widget-->Editable Table. I hope this will help you

Hi Asif,
There are two ways.

This could also be achieved using CSS grid layout, but then it would not be a table. 

or

Did you try this component https://www.outsystems.com/forge/component-overview/3669/dynamictable ? It is simpler than DataGrid, but for your usecase maybe it could work.
Please let me know if that works for you.

Hi Asif,

Recently I had the same problem. Wanted a dynamic table and there was no widget in Reactive that could do that. 

What I did was create a table from the root. Using the HTML Element Widget, you can build table using HTML. 

First of all, I put a HTML Element and named it as "table" whose class is "table".

It is necessary to "open" the table's header.

For each header row, I had to create a specific structure to pass the information that I wanted. In this case, my header is a list of cells, so I used the list widget and named his Tag as "tr".

For each cell, I used the structure to pass the information of how many columns the cell should occupy.

For the body rows and cells, the process is the same.

I used this technique to build a gantt table:

I hope I could help.