User 1: belongs to client group 'YCharts Staff'. This user will attempt to share model portfolios with 'YCharts Staff'. This user will alternate between share
and view_only
group_permission
User 2: also belongs to client group 'YCharts Staff. This user will be attempting to view / edit the model portfolios shared by User 1. This user will alternate between share
and view_only
group_permission
User 3: Does NOT belong to client group 'YCharts Staff'. This user should never be able to view or edit the model portfolios shared by User 1