SAP HCM for SAP Cloud Private Edition

Hi Experts,

I person spent galore days exploring documentation connected RISE with SAP and the conversion guides for transitioning for SAP ERP to SAP Hana Cloud Private Edition. Globally I bash person an overview of however this is moving and what are the steps to beryllium taken for the conversion process. 

The script I bash not recognize regarding the conversion process is erstwhile SAP ERP strategy is utilized for antithetic modules similar FI, CO, SD, MM and besides HCM wrong the aforesaid lawsuit and the concern request is to lone migrate HCM to SAP Cloud Private Edition  and support the remainder of the modules (FI, SD, MM ) arsenic they are connected the SAP ERP system. Is it imaginable to lone migrate HCM to SAP Cloud Private Edition oregon the full SAP ERP strategy should beryllium converted including each modules?  during the conversion process is determination immoderate measurement wherever lone circumstantial modules and exertion tin beryllium selected for the conversion?

Many thanks

Rachid.