Hello, I´ve been a few days investigating and trying to find the best way to
make a colaborative calendar. I want to do something very specific. I´m 
part of a network of several social based colectives that help with very 
diferent social problems. We want to make a calendar, so all the colectives 
have their own loging and password to enter the same calendar. 

The calendar will be displayed by an HTML link on all the web pages of the 
colectives participating. So as to have a unified calendar with all the 
activities that the different colectives purpose, to help reach out to more
people. 

I´ve tried "unifiying acounts", but, although there are several 
logins the password is the same for all, this could cause everyone to know 
the password and could give way to spammers to overwhelm our calendar. 
Furthermore, we have tried making a group calendar, but we cant share the 
link of the group calendar, only the link of individual calendars. 

Please If someone could tell me if this is possible in zoho and 
how to do it, it would be of great help. 

Thank you! 

(Sorry for the bad grammar, my first languaje is not english)