How can I change mantisbt so it can have a RFP type issue. Basically I want to publish a link to my website. And potential clients can go to my mantis and report an RFP issue. RFP issue should have different fields than a Bug issue. Also a Bug issue is project specific but RFP is not like that. And all RFP issues should be private to reporter. I have some public projects too. I dont want someone else get project Idea by reading an RFP.
How could I do it in mantis? If there is any other open source PHP based bug tracker that supports such mechanism please mention. My preference is to use mantis as I am using this for many other projects already.