From the Adobe Help Page.
Control column, frame, and page breaks by inserting special break characters in the text.
1. Using the Type tool, click to place the insertion point where you want the break to occur.
2. Choose Type > Insert Break Character, and then choose a break option from the submenu.
You can also create breaks by using the Enter key on the numeric keypad. For a column break, press Enter; for a frame break, press Shift+Enter; and for a page break, press Ctrl+Enter (Windows) or Command+Return (Mac OS).
To remove a break character, choose Type > Show Hidden Characters so that you can see nonprinting characters, and then select and delete the break character.
Note: If you create a break by changing paragraph settings (as in the Keep Options dialog box), the break precedes the paragraph that contains the setting. If you create a break using a special character, the break occurs immediately after the special character.