Talk to Jessy when she is in her room on Friday afternoon
That is why he said "some freedom", not "full freedom"
There are times of the day when there are several girls to visit, you can choose which one to visit. There are two stores to go and buy necessary things (some optional), and in the future there will be more places.
But I understand what you mean, it's not the classic freeroam, in fact lately it has tended more to VN type scenes, as we have had to give depth and history to the characters.