Create a user input grid that contains row and column headers

This link should help: forum.appian.com/.../SAIL_Components.html

Within the grid layout, use a!gridLayoutHeaderCell to include column headers, and use a!gridRowLayout with a text value as the first component of the contents parameter. You can set the first column to be readOnly, which will ensure that it is a static value, while the blue area can be user input fields.

@jawaraj An effective one would be to make use of a Rich Text (a!richTextDisplayField()) component with style as "STRONG" whenever needed as the first component in the a!gridRowLayout().

Please refer the below link.
forum.appian.com/.../SAIL_Recipes.html

Refer to SAIL Recipes to get an extensive idea on Editable Grid.

@jawaraj , Can you explain that is fixed template or you need to add rows when required..
if it is fixed template, better to go to the inline editable grid. it will resolve your problem

Thanks everyone the inline editable grid was the route to go!