Can I redirect a task to a specific user?

I have heard people saying there is no tool on the market (IBM, Oracle, Tibco etc.) that allows the flow to be directed to a selected user (because BPMN2 does not allow for that.)

Is this true? Can't this be done?

For instance, let's say you want to send an approval request specifically to some user because you've already dealt the details with her. You don't want to let the approval request to be picked up from whoever is in the Request Aprover role, instead you want, say, Dina to pick it up (who happens to be part of the role Request Aprover btw.)

User Metadata

In Bonitasoft 5.x I could define user metadata and set it from the administration view. Does this exist in version 6.x? If not, is there new equivalent functionality?

Do Bonita BPM integrates with LDAP ?

I already have all my organisation and users in LDAP.

How can I integrate Bonita BPM with my LDAP, import everything, and eventually update info in LDAP ?