Strategy advice sought, managing a 8 sheet ods

Read about

  • data validity in Calc
  • protecting cells/sheets

If you run into trouble/ need help open a another topic for this problem.
That seems to be this one:

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As this thread seems to have run its course …

In summary, there was only one suggestion, convert to an all-in-one sheet by @Villeroy (many thanks). Though the suggestion is prudent advice to consider going forward, it is evident I was inarticulate. So I’ve created a more explicit thread