Hello, Experts.
I am in charge of intergrating systems, which means I'm using SAP PI 7.31.
I have encountered the error below.
SAPClassNotFoundException: org.postgresql.Driver
So,I wanted to deploy Exrternal Driver (PostgreSQL) and found this documentation.
https://help.sap.com/doc/saphelp_nw73ehp1/7.31.19/en-US/1c/e05bc0c9ca41a783169ce4e18c1bfe/frameset.htm
But I need more information like images... :<

Could you help me, please?
Thanks,
Seugguk Oh