Indesign

I can’t find any options to full justify the text horizontally (so that each line spaces out to fill up the full line). I’ve tried optical kerning, and looked around in plenty of menus but it’s nowhere to be seen?!

On a side note, no one know anything about multicollinearity do they? I have some variables which are highly correlated with each other, but each significant to the dependent variable. How can I get past that?