Created attachment 198951 [details]
Demonstration video

I find the "Data Series" tab (in the "Data Ranges" dialog, or in the chart creation wizard dialog) to be very confusing and inefficient, mainly due to the way things are laid out in the right half of the dialog.

There are two main reasons for this:

* The "Categories" range field isn't specific to the selected data serie, but:

 1) it's in the rightmost half, where the serie-specific ranges property fields are;
 2) it's stuck *right below* the variable range field
    (depending on what property selected above),
    with no vertical between those... so I visually confound it with the rest.

  It could make a lot more sense to make it global, on the left half of the dialog.
  Or at least label it "Categories (shared across series)" and add some top margin.

* Selectable properties (Name, X-Values, Y-Values) use a single editable field below;
  This seems wasteful vs just listing properties with a range field next to each.
  Why would I want to select a property first instead of directly setting the range?


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Observed on:

Version: 25.2.0.3 (X86_64) / LibreOffice Community
Build ID: e1cf4a87eb02d755bce1a01209907ea5ddc8f069
CPU threads: 8; OS: Linux 6.12; UI render: default; VCL: gtk3
Locale: en-US (en_US.UTF-8); UI: en-US
Flatpak
Calc: threaded

...and every previous version.