1. To fetch the testdata from the file, follow the syntax -> filename~sheetname~cell, enter this in the testdata field and save chnages.

OR

2. Click on the edit icon of the particular step, Click on Test data source, choose From file in the dropdown.

3. Choose a file

4. Submit.

Setup:
To Upload a Excel file :
Click on upload file, choose the file, enter valid sheet name, cell (for ex. Sheet name-Sheet1, Cell-A1)
Click Upload.

Example:
Sheet name – Sheet1
Cell – A1