Almost, self-explanatory. Present characterisations or at least what you found out about the character so far, everything, start with their appearance if you have nothing else yet.

You should also add you own thoughts about the characters actions and decisions, whether you think them on the one hand sensible or understandable but also whether you think they are presented in a good style and believable or whether they are too predictable in your opinion.

Add a mind-map of the characters that tells the visitors and you about the relationships between them. This may help to keep the overview over all those characters and timelines.

You could also sort the characters into fields or even pages, those from 1923 and those from 1970.

Also, use your knowledge about round and flat characters and all the other literary terms you know by now.

If you haven’t read the whole novel yet, let your characterisations and thoughts develop over the course of the novel as maybe the characters you are watching develop.