how would u find out about the roles and responsibilities u have in the wrokplace??

Answer 1

When you were hired, you would have been given some idea of what your duties would be, in general terms. After you join, your manager would tell you about the nitty gritty of your job, and also guide you from time to time.
Many good organizations have a formal job card or job descriptions codified for certain jobs. You can check with your manager if your position is covered by one of these, and get a copy of the job description suited to your position.
If you find that the employer expects several things from your work which overlap the duties and responsibilities of others in the office, it is worthwhile to bring this to the notice of your manager so that some clarity could be achieved, and responsibilities defined.

Answer 2

Ask the manager.........?