This image shows the Security rules tab, labelled Ingress Rules, for the private subnet of the example VCN.
There is an Actions button at the top.

The page includes:
--Search field and Search button
--Add Ingress Rules button
--Actions button with drop-down list. 
--A grid with columns Stateless, Source, IP Protocol, Source Port Range, and Destination Port Range.
There are three rows in the grid.