Solution manager_document authorization

Dear friends,

I am in SOLAR01, Business blueprinting. In SOLAR01, in "Project documentation" tab, i am maintaing some five documents.

In the above five documents, first 2 documents i wants to give just "View" authorization for some project team member. For the same above 2 documents i wants to give "Edit" authorization for some other project team members.

Like that, depends on the team member who login, the document authorization to be maintained.

How to maintain? which authorization object needs to be used for this?

Thanks

Senthil