Hey Celine,

Thank you for your interest in our product! I believe you are referring to EasySocial rather than EasyBlog eh? Please find my response to your questions below:

=> it possible to allow create event action only for group ?

Yep, you could just disable event creations in the ACL of the profile types. This would prevent event creation from users.

=> its possible to limit number of site for events ?

Not sure what you mean by limit number of site. Do you mean limit number of seats? Yes, it is possible because we allow you to define the number of seats available. Take a look at my screen shot here, http://take.ms/Gku83

=> its possible to invite a group of person or specific person ?

You can invite users to join the site by specifying their e-mail addresses. Take a look at my screen shot here, http://take.ms/L56VI

=> its possible to use j2store in easysocial ?

To be honest, I am not entirely sure about this. Do you use their shopping cart or membership subscriptions?

ok thanks for reply
=> about invitation, it possible to invite a groupe of person ? (joomla groupe, or other easysocial group system)

Hi Celine,

Regarding your inquiry, unfortunately it is no such feature for invite a group of person currently.