To configure NetBios go to Services / File / NetBios, check on the Activation checkbox, set the workgroup name and click Apply button.

To start FTP server, go to Services / File / FTP, check on Activation checkbox, select the port to listen (optional) and click Apply.

To upload files by FTP we need any program, we recomend FileZilla, it's free and works so good. You can download it here: https://filezilla-project.org/

Once installed, only we have write the server IP, user, password and click on connect.

Now you can upload files by FTP just drag a file from one window to another.

To configure TFTP server go to Services / File / TFTP, check on Activation checkbox and click Apply.