Calc Removing a number from a range [closed]

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I am trying to automatically remove a number from a range of cells, if it appears in a different range.

I am creating a spreadsheet where once a number appears in B4:G11 4 times, it changes color to Red.......got that part.

Then I want to manually enter that number somewhere into J4:N21. once entered into J4:N21, i want that number to erase from B4:G11.

ideally at that point i would also like all remaining numbers in B4:G11 to shift up, leaving no empty cells above cells with values in them (keeping them in the order entered within columns).