How can I view only my own requests for a client in OTRS?

Question

OTRS

OTRS 3.3.7, Debian Wheezy I
just started to feel the system, so there is little experience. In 600str mane I did not find the answer to my question.
It is necessary to make it so that almost all clients can view only their applications, write to any group, and only one client has access to view the entire database of applications from all clients

Answer 1

Or queues if there are not many people.
Either ACL (this option is better)

Answer 2

Don't forget about roles and groups