Single column format to Two-Column format?

[chetanpujari]

I have document created in single column format, how do I change it to 2 column for the entire doument? 

[Willi Adelberger · Accepted solution]

Change or create an Object Style, where you set up 2-columns.

Aply this object style to your text frames.

If you have not used an object style or used the default one, you can use Find & Replace / Objects and selct in the replace field the new created Object style.