Hi,
take a look at this SW example:
c:\NXP\S32DS_Power_v2.1\S32DS\software\S32_SDK_S32PA_RTM_3.0.3\examples\MPC5748G\demo_apps\eeprom_emulation\
When you open EEE component, you will see how to define the blocks:

Also read section "17.27 EEPROM Emulation (EEE)" in the user manual:
c:\NXP\S32DS_Power_v2.1\S32DS\software\S32_SDK_S32PA_RTM_3.0.3\doc\S32SDK_MPC5748G_UserManual.pdf
Regarding ID - each record has own ID. This ID is used when you write or read your data. The best way is to step the example code to understand how it works.
Regards,
Lukas