EIM Installation on AS/400 consists of the following steps:
• Create a domain in EIM.
• Add the domain in the domain management.
• Create a source user registry definition in EIM.
• Create a user identifier in EIM.
• Create a target association in EIM for the user identifier.
• Create a source association in EIM for the user identifier.
• Test the connection to the EIM domain controller.
• Configure the EIM Identity Token Connection Factory.
All required information can be found here:
https://www.ibm.com/docs/en/was/9.0.5?topic=eim-configuring
Once it works with Client Access you can setup Easycom.