LibreOffice Calc provides a way to view a Calc spreadsheet in split manner.
If you are working in a large worksheet, scrolling is sometimes difficult for your productivity. This is where split is useful.
To create a split view, click on the small icon (see below image) at the right-top section of Calc.
Click and hold, then drag it down.
Then you have the same sheet with two views. If whatever changes you do in any of the view, is reflected in the other view.
Similarly you can split the columns as well. Click the below icon near bottom-right section in the Calc.
Row and Column Split Together