How to setup for requisition slip

In our organization, before any purchase order, we have to first create a requisition slip for purchase department to purchase the items. Still, we are doing this requisition slip on paper.
How can we setup this erpnext?

Use material request

Hi Sir,

I am new here. If possible, could you please elaborate the steps like how to use material request.

You are welcome.
See this https://docs.erpnext.com/docs/user/manual/en/stock/material-request