May i know whether it is possible to click on a member's profile, and when I click their profile picture, to show the full size photo? Now we can only see the thumbnail version only and In photos section of that user we cannot see the profile picture as well. Thanks.

Hi, Patrick.

I think this is possible. What you need is to customize profile focus template:

ROOT/components/com_community/templates/jomsocial/layouts/profile/focus.php (remember to do an override).

You'll need to add a php condition so enlarging avatar will not conflict with avatar upload for profile owner. Avatar image is stored in full sized (not even cropped) on server e.g: images/avatar/4c1a1c4482b17c4c716762d4ce743d49.jpg

I recommend you to hire a professional developer to achieve this:
www.jomsocial.com/jomsocial-developers