Consider using Google Drive as the platform your group uses to write blog posts.
I suggest creating a folder that you share with your group members. (Follow this link for information on how to share your docs and folders.) This way, every new document you create in that folder will always have the same share settings.
An added bonus: you’ll automatically have your own back-ups to the material you post on WordPress (in case anything should happen to your WordPress site).
The following document is where we will collaboratively define the parameters and goals of the group blogging assignment. Feel free to comment on current content and/or add additional suggestions. Please do not delete anyone’s contributions.
https://docs.google.com/document/d/1b9shuWqVdPRYo23PhSiULPclCyxpJuvnt7wznPzecUQ/edit