Calc: divide columns into scrollable ranges

I’ve figured out how to freeze row 1 and columns A-B. What I want to do now is, from columns C-P, display only 3 columns at a time, with a scrollbar at the bottom. Then show the remainder of the columns Q-ZZZ to the right of that. How can I do that?

Split Window shows the same cells on two different areas of the screen - that’s not what I want.

Group makes the whole range I define collapsible as a whole - also not what I want.

UPDATE: To explain what I mean about Split Window. Starting with this example:


Click in C2 and select View/Freeze Cells/Freeze Rows and Columns, to freeze columns A and B and row 1.

Now, what I want is a 3 column wide region, to the right of the frozen column B, which can show any 3 columns from C to K and has a scrollbar to let me shift around. I only want it 3 wide because in the real spreadsheet there are many more columns off to the right which are not years and don’t belong with them. So … click in F1 and select View/Split Window? Initially that looks like this:

Now if I slide the scrollbar to the left, it brings up the same cells on different areas of the screen (A1:B5):

So, yes they are independently scrollable, and don’t always show the same cells in different areas, but it can happen and in any case is not the result I want.

Split Window shows the same cells on two different areas of the screen

Not true. The areas are independently scrollable in the direction that is not tied side by side with the adjacent area, i.e. if you have a vertical split (left and right window) you can have each window display different columns. To move either use one of the scroll bars, or click into a window and travel the cell cursor with arrow keys. Only if the cell is visible in both windows an additional cell cursor is drawn in the not active window, but in the not active window the view does not follow the currently active cell position.