Redmine

+1

Yeah, it would be very good feature. In our company all projects are estimated during sales, but when the projects start, their teams re-estimate them. So, it would be very convenient to see the two estimates for PM: sales estimates (as private field) and team estimates (in Redmine standard "Estimated time" field).

+1 This feature is really useful.

Well, this one seems to be solved by #8050 and #12005.

You can define some workflow, where some role has write or just read rights, even for custome fields (#8050). Additionally, you can define if these custom field is visible or just hidden (#12005).

Is this an implementation, which fits your needs? If see, please give feedback and this Ticket could be closed.