Is it possible to show specific tab ?

Did you try reading the readme?

For example, to display the spreadsheet at https://docs.google.com/spreadsheets/d/ABCDEFG/edit#gid=123456, use the following shortcode in your WordPress post or page:

[gdoc key="https://docs.google.com/spreadsheets/d/ABCDEFG/edit#gid=123456"]

For old-style Google Sheets:

Use the gid attribute to fetch data from a worksheet other than the first one (the one on the far left). For example, to display a worksheet published at https://spreadsheets.google.com/pub?key=ABCDEFG&gid=4, use the following shortcode in your WordPress post or page:

[gdoc key="ABCDEFG" gid="4"]

I think this is what I am looking for ?? as per my last post.

Thanks ! and sorry ?? I did not see how I have to use “gid” !