joseph wrote:

Does stream, component has owner? Can we set the access control list
for specific compoent? Can we retrict some user to load componet to
their workspace.

If it not supported, can we customize the function?

In RTC 2.0 M3D1, this is possible.
Components owned by process areas and Streams can be governed by the
read access policy of the containing project area.

Personal components (owned by users) can be restricted to a particular
project area, or scoped public to the repository or private to the user.

Components serve as the gateway object for read access in Jazz SCM :
configure the component permissions appropriately, and your file content
will not be inappropriately accessed.

HTH,
JohnC
SCM Server