I would like to discuss a use case here, much appreciate your help
My current setup:
Two types of users :
finance user can start or see topics from finance category and
marketing user can start or see topics from marketing category only.
new user case
But now I want to make some changes in permission to support. that if marketing user wishes to post a topic in the finance category, then they should be allowed, but they only can see topics from marketing category and topic started by him/her in finance category.
As, I feel this is something related to hacking of permission I am posting this in dev category.
Please help how can I achieve this?