Need POC, Config Steps for SAP EWM Allocation Process

I need help with the below concept.
in SAP S 4HANA - EWM Extended Warehouse Management

Need config steps and Proof of concept of the end to end functionality on Cross docking using Allocation Method - I should be using a PO Reference.

Which Means:

Users should be able to input a PO _ Purchase ORder Number
System should populate all the Line Item Invoices from the PO into the Allocation Cycle.
Users should be able to execute the allocation cycle end to end and distribute goods to different store locations and post all related documents.
like:

Collective Purchase Order for Vendor for Procurement
Create STO - Stock Transfer Orders to Stores
Post Goods Issue at Warehouse
Post Goods Receipt at Stores
Update Material Documents - Stock at stores.

I would need the complete details to set up the configuration in the sandbox and run the cycle end to end.