In the past there has been no chance of movement to the right hand seat, last year they introduced a co-pilot upgrade program. Which has already seen one captain produced on the system.
Due to the upgrade system the requirements for co-pilots has also been lifted ( no more 200 hr co-pilots ).
Depending on where you fit in into the systems depends on how long it will take. It may take a few months to 4-5 years.
All new captains and co-pilots are employed by the same contract company.