ESS/MSS Scope for all Modules

Dear All,

My Client is implementing all the following modules: OM; PA; Time; Payroll; Comepnsation Mgmt.; Training & Event Mgmt; Personnel Development; Recruitment.

Now they want to go for ESS & MSS also. I have rough idea of ESS & MSS functionalities but not aware what all functionalities it give with respect to these modules.

I need to give the scope/efforts along with the timelines.

Kindly help me in understanding the functionalities of ESS/MSS related to above mentioned modules.

If you have any document, kindly share.

Regards,

-Tina