If you have two or more files, different structure, and you would like to output each file into a separate tabs in an Excel spreadsheet. You could use the table tool to create snippets and the Layout tool to create sections breaks.
Bring in your files using the Input tool and connect them to Table tools to create the snippets. Finally, Join them by record position.
The Layout Tool properties should look as follows. Select Vertical with Section Breaks for the Orientation setting.
The output will show each file in a separate tab:
Output different files to multiple Excel tabs.yxzp