Hello Cetin,
Thanks for your valuable feedback. As of now ,you can only update the extra data of player through dashboard. We are already working on to revamp our UI and its experience and it will include all the editing part in it. New UI will be available by end of this quarter and will include all requested features.
Still, if you think that this is show stopper in considering App42 for your system, we will do it on priority for your specific requirement for updation.
Thanks,
Himanshu Sharma