A portal inside a portal. I tried this with no success. Does anyone know a workaround to achieve the same result? An example of what I might be trying to achieve could be; A compny record with a portal of staff members and then list of telephone numbers for each staff member.

You could use value lists in Each portal row to show related phone numbers. Or you could script a button in the staff members portal row that opens a new window with the staff members record on another layout. That layout would have the phone numbers portal.

thanks the value list idea is a good one