To start, go to Stores -> Configuration -> IWD -> Order Grid



GENERAL


Enable
    Activate the Order Grid solution for your store

Colors for Statuses
    Specify the colors of the order statuses to mark orders on the order grid

Specific columns
    Select the columns to be shown on the order grid


TOTAL


Enable Order Grid Totals
    Enable/disable showing sales totals at the bottom of your order table.

Order Grid Totals
    Select which order totals you would like to appear at the bottom of your order table


DELETE PROCESS ON THE GRID


Allow Delete Order(s)
    Set to 'Yes' if you would like the option to delete Magento orders

Allow Delete Order With Statuses
    Specify which order statuses can be deleted

Allow Delete Invoice(s)
    Control if invoices can be deleted

Allow Delete Credit Memo(s)
    Control if credit memos can be deleted

Allow Delete Shipments(s)
    Control if shipments can be deleted


MASSACTION

Allow MassAction
    Select the mass actions to be shown and available in the order grid mass actions