depends on what culture of agency you would like to join. There have professional, cunning, subsale, project, individualistic, team building etc...
My advise is that not to join any agency that is not willing to issue you a REN tag... without a REN tag you are as good as illegal broker.
Of course, many agency will say you are still under 6 months probation period which if you cannot survive the probation period, you might not even get a REN tag.
But those ethical agency will always have the agent attend the NCC course (Negotiators Certification Course) before they even join the company. With that NCC certificate, you can then apply for REN Tag with the Board of Valuers, Appraisers & Estate Agents Malaysia.