Collaborations: multiple members on a log
You can assign multiple members to a log using the member selection popup.
https://dl.dropboxusercontent.com/u/1623041/punchtime/logs2.png
On a log, all members are shown on the left, their avatars overlapping when there are more than one (you can hover the avatars to separate them):
https://dl.dropboxusercontent.com/u/1623041/punchtime/logs7.jpg
Note that on the right, you see the time logged for each of the members: three members each logging 50 minutes. The daily total – in green, above the log – shows that the time spent on this log by all members is summed (2:30h).