You are not required to specify the module you are interested in, since no additional diploma related to the selected optional subjects will be delivered. The modules are defined only for helping the student to select the optional subjects. That is, the student is free of selecting any of the optional subjects programmed.
At least, four optional subjects must be selected. If the student desires to perform more than four subjects, it is possible. A maximum of 6 optional subjects is recommended due to the associated workload.
Once your Pre-registration is Accepted, you will have to indicate the Optional Subjects that you want to follow to the MMS Coordinator before to start the Registration. It would be adequate to discuss the optional subjects with the MMS Coordinator for helping you with this decision.