Just something that gives a party summary. I have had multiple occurences were I invested character 1 in bartering and then 4 hours later I invest it in party member 4 (because I forgot).
That is why I love this planning tool since it allows you to plan ahead for your next level up.
eg:
char 1: will be my shopper (barter)
char 2 :will be my leader (leadership)
...