In the checkout page ,there should be a field for customers to add their note of the ordered items.It should be created under the location field of checkout page in the webstore.It should be available on the field created in the SO for comments under the customer contact in the SO record .The PDF of the SO,Picking slip and Packing slip will also contain this field under the POS field.
Jira code:SQUIP-129,SQUIP-144

Requirement 

As the requirement, there should be a field in the checkout page under the pickup location field  where customers can add their comments.This comment should be saved on the sales order record under customer contact which will be disable after value is saved.This comment should be available on the PDF of sales order,picking slip and packing slip.

Our Solution

It will be done on the sandbox initially.

• Comments/delivery note field will be created on checkout page under Pick up location as shown
  
  The comments added by the customer will be saved when order is placed.
• A custom transaction field will be created in the Sales order record under customer contact.
  
  The text added in the checkout page will be saved here and the field will be disable not editable from UI.
• A field will also be available on the SO,picking slip and packing slip under POS to display the comments added by the customer.