Is it possible to build a form with drop-down options that will not show if the previous entries have already chosen those choices?

Is it possible to build a form with drop-down options that will not show if the previous entries have already chosen those choices??

I.e

Drop-down options:
09.30
10.00
10.30
11.00
11.30

and if one user picked 09.30, the next time the form loads, that options is not available to pick.

Many thanks.

Allan

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