Yes, you can prevent attendees from messaging specific participants in ConnexMe:

1. Go to evenium.com

2. Click the Login button or Click My Events if you’re already logged in

3. Click on the name of the event underneath the I organize section to enter the back office. 

4. Click Participants located on the purple bar

5. Click the last name of the participant you want to hide

6. Click Advanced Options

7. Check the Block Private Messages (No Recipients) box

8. Click Save at the bottom of the page

To prevent multiple attendees from contacting specific attendees:

1. Go to evenium.com
2. Click on the "Login" button or on "My Events" if you are already connected.
3. Click on the event name under the "I'm organizing" section to enter the back office. 
4. Click Participants located on the purple bar
5. Check the box next to the names of the participants you want to prevent from contacting other participants
6. Click Modify on the top of the page
7. Select ConnexMe
8. On the drop down underneath block private messages, click Yes
9. Click Update to save your changes