"To change the current identity's settings
On the File menu, point to Identities, and then click Manage Identities.
Change any of the settings.
To change your identity name or password, select your identity name, and then click Properties.
To change the identity that opens on startup, select an identity from the drop-down list. (If the check box is cleared, you will be prompted for the identity you want each time you open an identity-aware program.)
To change the identity that you want all programs (identity-aware or not) to use when performing automatic processes, select an identity from the bottom drop-down list."
From OE Help, there are more items in here. Go to the Search option in Help and type in Identity, this will give you a list of options.