Robocopy for Incremental Backup

Hi people, need some advice on using robocopy.

I have been using robocopy to backup my files from \\A\ to \\B\, and it has worked perfectly fine. Until I was told by my boss that I need to have incremental backups of my files for each day of the week!

Now for a detailed breakdown of the issue:
1) I need to do a full backup of \\A\ to \\B\ on Monday
2) For each day from Tuesday to Friday, I need to do incremental backups

Now here comes the problem; what I mean by incremental backups is that the 'unmatched' files need to be be copied from |\A\ to \\C\ instead of \\B\ The reason for C:\ is that it will allow me to 'physically see' only the copied files in a separate folder without the un-copied files.

This way I will be able to see a Full backup on \\B\ and Incremental backups on \\C\ \\D\ \\E\ and so on until the end of the week.

But for now, all I get is to open the LOG and manually identify & transfer the files to another folder. Terrible!