I have added 100 menu items in my kitchen. Few of the menu items are not showing in the categories on store front. I tried adjusting the priority field in the menu item, it makes other product disappear if i change the priority field and make that menu item visible. My question is what should be entered in the priority field and what number sequence should be followed? Should i restart the priority for each category item from zero? All of my menu items are not showing on the store front while admin panel shows all menu items as enabled and correct.