Is it possible to share or add external users to an RCCD Microsoft Teams channel for communication or file sharing purposes?

Unfortunately RCCD does not permit sharing of RCCD Microsoft Teams access to external users (non-RCCD). 

RCCD employees are able to to share OneDrive files and folders  with external specified users. 

Please see the following link to a KB article that will explain how to proceed with this method: 

Sharing OneDrive Folders with External Users

https://servicedesk.rccd.edu/TDClient/247/Portal/KB/ArticleDet?ID=27948