I am struggling to make a view to display the posts of a group. I have done the filter and chosen the fields I want to display, but I am struggling with the arguments. I am not sure what the path would be, if I want the view to be a tab of the group node.
Try this contextual filter:
- "(Organic groups group) Organic groups group: Entity id"
and have these 2 relationships added:
"Group membership: Node group membership"
"(group membership) OG membership: Group gid"
This will show the nodes that belong to your group. Sorry, I can't help you on the "tab question".
Make sure to checkout this awesome OG video tutorial.