The ‘Activity’ tab is your area where you and other Alumni Members can write updates, leave comments and like posts.
This is a public wall and all users can see each other posts and comments. Therefore please do not share any personal/sensitive information here. You can use private messages if you need to share this type of information.
To write on someone else’s activity tab, head over to their profile and click on ‘Activity’ then you will be able to type in the box and click on ‘Post’.