ChiliProject is not maintained anymore. Please be advised that there will be no more updates.
We do not recommend that you setup new ChiliProject instances and we urge all existing users to migrate their data to a maintained system, e.g. Redmine. We will provide a migration script later. In the meantime, you can use the instructions by Christian Daehn.
Allow multiple (weekly) time logs for one issue (Feature #1153)
Please review the attached file for details.
I would invite this functionality too, I described similar (but little bit more complex) functionality in the discuss about reportuing system here: