attending classes how to notify cases of learning not attending?

Hello ,

 In classes we would like to document / have information (for the HR or the manager ) if a Learner didn’t attend a class. And to have also information when the learner didn’t attend an certain times the classes, without a legitimate approval to no attend the class. (to inform that the learner didn’t attend the class for example 3 time without an approval. )

 How is it possible to have information regarding the above and the amount of it ?

 Thanks a lot

 Revital.