Folders aren't shared by default, so there's an extra step you have to take to share those with other users in your committee.
While in a folder you want to share, click the "Edit Folder" button in the top right corner:
Under the User Access section, select the user you want to share with from the right hand column and click the "Add" button:
Once you've shared a folder, anything you save there in the future will be automatically shared with any users you've added.