You would want to add multiple text slides.
I hope this helps as the wording of the question was unclear.
Every program that interacts with people responds to a specific set of commands. The set of commands and the syntax for entering them is called the user interface and varies from one program to another. The DOS operating system makes a distinction between internal and external commands.
Right click the cell, click add cells & it should say the options (new row above etc.)
Sorry for this but to be honest we do t get taught this in the school I go to sorry