Go to your RFPs or Profiles page that shows a list of your projects. Then, simply check the box beside the one you would like to move and then the Bulk Actions menu at the top of the page will become active. Click on Move Accounts from the drop-down menu.
Once you click on Move Accounts, a separate window will open allowing you to complete your action.
You will now see your Profile/RFP reflected in the sub-workspace of your choosing