Copy checkbox - calc

Hello!
A checkbox was created in cell F4.
To prevent “TRUE” and “FALSE” from appearing in the cell, the text was set to white.

  1. Is there any other / better way to hide the text “TRUE” / “FALSE”?

  2. I never managed to get the checkbox in the middle of the cell - Is it impossible?

  3. Now that the checkbox works in F4, it should be copied to cells F5 to F380. This failed completely.
    The checkboxes are copied but the reference is not dynamic. i.e. the checkbox in F5, F6, F7 etc. has the same reference F4
    When checkbox F4 is selected, all other checkboxes are selected.
    Is there any easier way to copy the checkbox in F4?

Hello!

So, it will be 376 checkboxes? Oh no! Please don’t do this! It will be very difficult to implement, it will overload your spreadsheet with completely unnecessary controls. 5 or 7 checkboxes per sheet are still acceptable, but if there are more, it is better to use other mechanisms. For example, something similar to this.
Demo