I am having trouble with InDesign (v.CS6) text boxes always defaulting to 5 columns. I changed Margins and Columns one column, but this doesn't work. And when I manually change a box to 1 column and add to the library, when I use the library item it goes back to 5 columns. Help! Thanks!! Liz
In InDesign with no file open, choose
Object > Text Frame Options... and set it to what you want.
By doing this with no file open you essentially set the preference for new text frames.
Margins & Columns is for page guide columns and does not alter text frames. If your page has 5 columns and you always want just one, then you'd change
Margins & Columns with no file open.