You cannot bring your own charts or any kind of paper. Only calculator is allowed but not a complex programmable one
For charts, most frequently used charts are preprinted and available but if not, you write down chart number you have in your question and give it to ladies for printing. In 1-2 minutes one of them will bring you printed chart (except there was at least one question requiring full format jepessen chart and ladies will also provide it).
You can choose first subject that doesn't require any chart and you will see how other guys asks for charts
All you need is yout ID. Paper, pen, calculator, plotting stuff, computers - everything is available there (but if you want to use your computer and calculator - you are allowed)