How do i create demand by using movement requests

Summary:

How do i create demand by using movement requests.We need to generate supply of PO and internal orders

Content (required):

We have a requirement where movement requests to be considered as demand and plan the material either from supplier or internal org transfer..Please let me know how do i load the movement requests as demand

Version (include the version you are using, if applicable):

22B

Code Snippet (add any code snippets that support your topic, if applicable):