Add your batches by using the edit screen. You can get to the edit screen by:
1. Create a Production Run
2. Click blue "Edit" button
3. Add green pounds to your main production run as necessary via the Adjustment Screen (step 1 below)
4. Click "Save Adjustment" (Step 2 above)
5. Click "Approve" on initial Production Run screen
6. You've added roasts to a production run beyond what's ordered!