We want to create a lookup relationship on care program product to medication in health cloud. Our products are medications. We get an error message. Any advice? #healthcloud

We want to create a lookup relationship on care program product to medication in health cloud. Our products are medications. We get an error message. Any advice? #healthcloud

I have customers, partners & employee users, each with their own profile. All 3 of them update the same chatter feed on a record. I want customers to only see what employees post, employees to see what both partners & employees post and for partners to only see what employees post.

How can I achieve this requirement?