Open the excel Sheets you want after dowloading an Excel file once

Hello I need help.

I would like to open an Excel file that contains several sheets once. But each sheet will have a different treatment. For example, if my file contains two sheets, sheet 1 and sheet 2, each sheet will then have its particular treatment. But I don’t want to load the file twice. I tried several solutions but I can’t do it. I have version 4.7.8, I work in a company where it is difficult to download the nodes you want. So apart from Excel Writer and Reader I don’t see any other solutions for me.

thanks a lot for your help