Creating this attribute on the category will cause the system to show age verify prompt for all items in that category.
      - Go to Items in the main navigation menu, then go to Categories. 
- Press Custom Attributes in the upper right corner. 
- Press + New Product Attribute. 
- Under ATTRIBUTE CODE, enter age_verify. 
- Under ATTRIBUTE NAME, enter Over 21?. 
- Under CUSTOM ATTRIBUTE TYPE, select Product attribute / string. 
- Under FRONTEND INPUT TYPE, select Select. 
- Press + Add New. 
- Under VALUE, enter true. Under LABEL, enter True or YES. 
- Press + Add New again. Under VALUE enter false and under LABEL, enter False or NO. 
- Under UI COLUMN SIZE IN POS, enter 3. 
- You can leave the dropdown menu under SHOW ON QUICK UPDATE FORM blank. 
