There are just few steps to set "Accept Special Instruction(s)" for your store.
Login to your Yamimeal Account via Yamimeal Merchant Portal
Click on "Merchant Settings"
Click "General" and followed by "Business Settings"
Scroll down to "Accept Special Instruction(s)" section
Confirm your choice and click "Submit"
If you need further assistance, please feel free to submit your request to Yamimeal Care Team through our Help Center and we will contact you as soon as possible.