RE: Connecting to IBM i from iACS using Shared Credentials.

There's also the following but who wants to store their passwords and then have to change that whenever their passwords change? Nay, not I.
Looking hard at EIM/SSO
9.11 Using Credentials from a netrc File
To enable the usage of a .netrc file (Linux and Mac) or a _netrc file (Windows), go to the IBM i Access Client Solutions main GUI and from the menu bar, select
Edit->Preferences
General tab
Check the box: Read netrc file for login information
Click the Apply button
Restart IBM i Access Client Solutions
The standard format of a netrc file is:
machine <system> login <user-id> password <password>
The netrc file must be stored in the user's home directory and the system name and user-id must match System Configurations. From IBM i Access Client Solutions:
Select System Configurations
Select and then Edit the system
Connections tab
Select Use default user name to prompt once for each system
Fill in the user-id for: Default user name
Select OK

Rob Berendt