Change logs for administrative changes

I would like to have change log data available for:

1. Groups - this is my top priority in this request

2. Risk

3. Improvements

For each of these, it would be very helpful to be able to view a comprehensive list of all administrative changes that have been made e.g. date of creation for groups/portfolios, user who created it, detail of what was changed (system produced, not a comment field), date of modification, user who modified it etc.

We currently have no way of knowing which administrator has made changes, or who created specific gorups etc.