Knowing the credentials of two Storeroom Managers (e.g. srmanager4 and srmanager3), System Administrator (e.g. administrator) and Warehouse Clerk (e.g. wclerk1);
Changing the first Storeroom Manager's email address to one's own as the System Administrator;
Logging into the application as the first Storeroom Manager and navigating to Requisitions > Create/Authorize.