Hi Ben,
Thank you for your reply.
For the third question my objectives are as follows -
The mtcars dataset has data on various cars. My goal is to compare one car to another. For basic understanding, for now let us consider the goal to -
I) Select two or more rows from the data table one of which will be the baseline for comparison.
II) The selected rows upon clicking a "compare" button should open in a new tab of the app i.e., a new tab where we will now have a data table with just the selected rows
III) Finally we would like to create further metrics on the new tab with the help of which we will be able to compare the selected cars against the first car we chose as a baseline for comparison.