I have an issue where activites are not being shared as I understand they should be.
First off the OWD is set to Controlled by Parent.
We have a community with partner users, there are tasks related to a custom object which are created by a user which are assigned to another user however the creating user can't see the tasks despite having created them and having access to the parent record.
Am I misunderstanding how activities are shared, in which case can someone explain it and how to achieve what I want. Is there some other setting I should be looking at.