Depends. If your store still has MyAlerts, then
@Hardlinesmaster is correct. If you no longer have that app, then you need to open MyDay. Click on the picture of a person in the upper right hand corner. Click "Change Work Center." Scroll down to General Merchandise. Click the down arrow on the right. Click "Fulfillment." Scroll down and click "Save." Note you can also get fulfillment alerts by changing your work center to Service and Engagement, but that will give you a bunch of other alerts that you probably don't need, such as registers that need change and RedCard sign ups.