Assigning an activity to a case from within contact page

[marc]

Hi,

apparently it used to be possible in civi 2.2 to add an activity from the contact page of an individual to an existing case. Say I am the project manager and want to add activity Task to my case Website, then I was able to do so from my own contact page and didn't have to go to the manage case site. How can I do that right now?

Can I also later on reassign an activity to a different case easily?

Marc