Keynote
You can format text in a text box into two or more columns in which text flows automatically from one column to the next.
Go to the Keynote app on your Mac.
Open a presentation, then click the shape or text box to select it.
In the Format 
sidebar, click the Text tab.
Click the Layout button near the top of the sidebar, then click the arrows next to the Columns value field to add or remove columns.
To see more formatting options, click the disclosure arrow next to Columns.
Go to the Keynote app on your Mac.
Open a presentation, then click where you want the previous column to end.
Choose Insert > Column Break (from the Insert menu at the top of your screen).