Do you mean you want to create a new quick steps which can quickly send a message to all team members?
If yes, go to Home > Quick step > rolling down to the last button named "create a new" > You can rename the new button name and add action as you need.
See the link to get more information about Quick Steps:
http://blogs.office.com/b/microsoft-outlook/archive/2009/07/27/introducing-quick-steps.aspx
Tony Chen
TechNet Community Support
