There are just few steps for you to editing an item category of an item on your menu.
Login to your Yamimeal Merchant Portal via https://merchant.yamimeal.com/web/merch/#/login
Click “Item” inside “Menu”
Click the name of the item to be edited
Edit the category of the item that required updates
Click “Submit” to save and publish the updated item
View video below for demonstrations of the procedures above.