Individual User Access

Dear FA Team.

I've been monitoring this project for a few months already and honestly I have no accounting background, though I have programming experience with a few knowledge on business which was taught to me during my years of running a small company.

As of now, FA doesn't seems to support limitation for individual access record. For example:
If I have 2 sales people and I want each of them to manage the quotation, sales order, and delivery for their own client, but I want to limit them with privilege for their own record, so they can't modify other people's record or maybe as simple as not listing them up for them to see.

Can this be done? I couldn't find a way to do this at the moment.

Thanks.
Wendy Novianto