Is it possible to create a drop-down menu that is link to each other?
-> Column 1 has items Object A,B,C. When I select Object A, in Column 2 only items under Object A will be shown (A1,A2,A3). When I select Object B, only items under Object B will be shown (B1,B2,B3), and so on. Same goes to Column 3, when I select A1, only items under A1 will be shown (a1,a2,a3) and so on.

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