I can't find the parameters or repository tab

Hi! I'm trying to complete a process, but I can't complete it without the parameters tab that should show up to the right of my screen. It won't pop up when I select the "select attributes" operation, and in trying to figure it out, I accidentally deleted the repository on the left side of my screen. I don't know how to put either of them back up. Is there anyone that can help me? Here's what my screen looks like now, and below it is what it's supposed to look like.