Redmine

Hi All
We use Redmine 0.8.7. The problem is:

• In my Redmine I added custom field - "cust". This is a list of my customers. It is setup not "For all project".
• In Redmine I have one project: TTCustomer - it is special project only for my stuff. Each issue is connected with any customer - we use field "cust" in each issue.
• I have some customers with access from outside our company. They have own projects in my Redmine. For example "abc", "cde" etc.

I need something like that:

• on list of issue in each project (or only in TTCustomer) I need column "cust" and possibility of filtering and grouping (I know it is easy when I checked checbox "For all project" in definition of "cust")
• my customer should not see that field or they can but only in their own projects (in that case there will be their name)
• in new issiue in project "TTCustomer" there should be field "cust" with full list
• in new issiue in other projects (or in project of my customers) there should not be that field or may be but with only with name of selected customer

It is possible at all ? Please help me.

Sorry for my bad english.

Best regards
Marcin