Navigating Through Sheet Tabs
By default LibreOffice displays one sheet "Sheet1" in each new spreadsheet document. You can add sheets using the (+) button at the bottom of the screen and switch between sheets in a spreadsheet using the sheet tabs.
If the sheet tabs are not visible, choose to display them at the bottom of the screen.
The navigation buttons are enabled when the number of sheets in the document is greater that the number of sheets displayed in the sheet navigation bar.
使用助手按鈕顯示文件中所有的試算表。按一下最左側或最右側的按鈕，以分別顯示第一個或最後一個試算表分頁。使用中間的按鈕，您可以在所有的試算表分頁中向前或向後捲動。若要顯示某個試算表的內容，請按一下對應的試算表分頁。
Left click: Adds a new empty sheet to the right of the current sheet.
Right click: Opens a sub menu with all sheets not marked hidden. Click on a sheet name to jump to it. Hidden sheets are not listed in the sub menu.