Forgive me for being dense, but I think I am missing the distinction between "an entire table" and the entire page.
I have 2 simple data entry cells in a one page. one sheet spreadsheet.
Those cells affect 3 result cells, and they affect 2 columns of numbers that are calculated based on the entered data. Again, all on the same page.
Using the Arrange/Lock feature, I seem to be able to lock the entire page, not sections of it. If I select 1 or a group of cells and then go Arrange/Lock, it locks the entire page, preventing the user from redesigning my page, but also preventing them from entering data to get a calculated result.