Redmine

Please check your project settings. I'm pretty sure they are marked as public. Also have a look at RedmineProjects.
Otherwise your Marketing folks should not see the other projects, even if they share the same tracker.

Hi, Bernhard Rohloff
Thanks for your support.
Actually, all of my projects are private.
I want the view of each department should be
Company
- Marketing

or
Company
- Sale

it means that I also added MKT and Sale members to parent project (Company) and child Project (Marketing or Sale)
If I only add each department members to their project only (sale members to Sale Project, MKT members to MKT project), their view will see name of their department project without name of Company project.

ps: actually I quite confuse that how can I organize Projects, so each department members have a easy-understand view of list Project or if I have multiple of Projects and all of them divide to department child projects

for ex:
Project 1
- MKT
- Sale
Project 2
- MKT
- Sale

Sory if my Eng is not good.

Usually I create groups for different departments and structural projects. I always have a "Company" group and one for each department. In structural projects I add the company group with a very strictive role. In the subprojects I add the department groups with their appropriate role. This way everybody has the top structure visible but just access on things they belong to.

Dear Bernhard Rohloff

Thank you for your support. You help me alot.
I'll try your solution.