action menu
Action menus include options for quick tasks you can perform on a selected table, row, column or cell. An action menu button appears at the bottom of the screen when you select a table (), row (), column () or cell (). Tap the button to open the menu; options in the menu change depending on what’s selected.
If the keyboard is open, you can tap in its top-right corner to open an action menu.
Note: If you received a spreadsheet from someone and can’t see the action menu, the spreadsheet may be in reading view. Tap at the top of the screen to leave reading view.