Check the Open at login so my files sync automatically box if you want your sync client to open when you log in to your computer.

The OneDrive is ready for you screen appears.Choose what you want to download to your OneDrive folder on your Mac and then click Next.You can change the location of your OneDrive folder if you wish.OneDrive will create a OneDrive - Leland Stanford Junior University folder at this location. Select a location for your OneDrive folder and then click Choose this location.Click Choose OneDrive Folder Location to select the folder that you will sync to OneDrive.Enter your SUNet ID and password on the WebLogin screen.At the Office 365 prompt, click Sign in (do not enter your password).When prompted for where this email address is used, click Work or school.Enter your email address and click Sign in.When the app has finished downloading, click Open.Go to the Mac App Store and search for OneDrive. (The app is free.).Your computer needs to be running OS X version 10.9 or later. If you already have a personal OneDrive account set up on your Mac, you can link your Stanford account to it. If you add, change, or delete a file or folder on the OneDrive website, the file or folder is added, changed, or deleted in your OneDrive folder and vice versa. This folder is kept in sync with OneDrive. When you install the OneDrive app for Mac, a copy of your OneDrive is downloaded to your Mac and put in the OneDrive folder. OneDrive offers the ability to store files in the cloud, access them from multiple devices, and share them with others.

How to delete onedrive sync settings