Block Agent in Comm is the third option that comes up when one long presses a name.   This is useful if someone insist on being annoying in comm after other measures have failed.   (Sometimes the agent in question will listen to fellow faction members to watch what they say.)  

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Crash course in setting up a FS:
Watch this site for current registration: https://fevgames.net/category/ingress/ 
sample registration form: https://fevgames.net/ifs-reg/
if one cannot get all the extra pieces at time of initial submission, you can edit and resubmit: https://plus.google.com/+JadeHollowell/posts/Gcw8wMnotU3
Additional resources under Come and Hack It in the About this community section: https://plus.google.com/u/0/communities/111253368905150976251  
Missions:  https://support.ingress.com/hc/en-us/articles/206475078-Create-Ingress-Missions-the-basics
Other Mission information: https://support.ingress.com/hc/en-us/articles/206625348-Mission-criteria
 to streamline FS specific missions:  https://plus.google.com/+JoshuaZaelos/posts/JbVDNjv3pXj

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There is a series of YouTube videos under Ingression:
Here's a link to get you started.
https://www.youtube.com/watch?v=SkXRXbnRCYk

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