How to activate my content sidebar

I am using a full width layout as I need it for a table to properly expand. However I want to use my content sidebar and have used wigets to navigate the posts I want to display on it and saved them but it is not showing up. I looked on the sidebar.php and saw code for a top and bottom sidebar wrap, sidebar1 and sidebar2 and that’s all. I also have a tertiary sidebar listed but that’s not in the code either so in order for my content sidebar to show up I’m guessing I have to enter the proper code to the sidebar.php and I do not know what that is. Can anyone help me out? Thanks!