After updateing your middle ware and activating the order grid component.

Within the configurable product edit screen you will see a new option: "Display mode"

you can access this option by navigating to :

Catalog >Configurable product > display mode

The display mode will show you three options:

1. Normal
   The configurable product will be show with classic b2c selection interface.
    
2. Order grid
   The order grid will be loaded for all customers on the front-end
    
3. Order grid for logged in customers
   The order grid will be loaded for logged in customers only. Not logged in clients will see the regular configurable product selection interface.

Aply to all products: 

Go to 
Catalog > products 

From the order grid select the products you want to update.

Then select from the Actions tab the option: Update attributes and select the desired value in the attribute Display mode you want to apply to your product selection

Product sorting order
You can set the sorting order of the products in the order grid. The sorting is defined by the position of the configurable attribute variables  in the backend. 

To set the order go to:
Catalog > product

Select a configurable product and go to section Configurations  > EDIT CONFIGURATIONS > STEP 2 ATTRIBUTES VALUES >

The order grid will group the articles by the first attribute group defined.

When done sorting complete the wizard by clicking NEXT and Save the product

Visual configuration option.
The order grid is compatible with options for 

Image as swatch
Set the simple product image to use as swatch and it will be used in the grid.

Swatch color
In case a swatch is set in the attribute options in the catalog the swatch color  will be displayed in the order grid.

Swatch image
In case a image is set as a swatch for the attribute option in the catalog the order grid will display the swatch image. This is not the same as setting a product image as swatch.

Swatch label
The order grid is repecting the store front attribute label defined in the attribute option list.