Can I show author and commit log in diff inside bitbucket?

Question

Here is my context:

I am working in a repository with two branches: master and develop.

All the team makes local changes in their code and after finishing their task they merge their commits into the develop branch.

After some time, a Pull Request is made to the master branch. Here is where my question rises:

I have different authors and commits made all in the same pull request. When I look the diff in the Bitbucket GUI, how I can I know which person made which change in each file or line? (so I can tag that person and deny the task equivalent of that commit -- when there is a problem)

Right now, the only solution is to go commit by commit to see the changes, but it doesn't seem very practical. Is there any conceptual problem in my workflow?