How can I generate exams that contain randomly-generated single-choice answers using R/exams package?

I am interested in using R/exams package in order to generate tests composed of 'single-choice' questions. The three most important things that I am looking for are:

-being able to randomly select one (or more) out of a set of exercises for each participant

-being able to randomly shuffle answer alternatives

-being able to randomly select numbers, text blocks, graphics using the R programming language.

I have followed the basic R/exams tutorials and was able to generate their demo exams, but I was not yet able to find a full tutorial on how to achieve these goals. I am a beginner R programmer and I would, therefore, need a step-by-step tutorial.

If there are any suggestions of such tutorials here I would really appreciate any help.

Thank you