Overview & Background
If you would like to upload files from a different Box or Dropbox account than your usual, simply log in to whichever cloud service you are using and go to your account settings page.
Once in “Settings,” click on the “Connected Apps” tab. You’ll see the Fieldwire link(s) displayed here. To remove it from your account, click on the “X” on the right side.
Once in “Settings,” click on the “Security” tab and look under “Login Activity.” You should see a list of all the applications you granted access to, and when you see Fieldwire, just click the “X” button to forget the app.
The next time you’re on Fieldwire and try to add files from Box or Dropbox, you will be prompted to log in to either service again and can use a different Box or Dropbox account of your choosing.
Tutorial video on Dropbox/Box 2-way syncing