Hot Buttons are used to allow users quick access to key functionality/tasks that would normally only be available through the right-click menu.
Below are the default buttons that are permanently available on all views:

    >   New Order - used to create a direct order within Linnworks, eg - when receiving a telesales order
    >   Despatch Console - used to make the process of despatching orders fast, easy and efficient
    >   Settings Cog - provides access to order book settings and control the location used when dispatching/fulfilling orders

In order to add hot buttons to Open Orders screen in, you need to go to your Open Orders screen > select Edit View (default or any other view) > Hot Buttons > Add New.

For detail on how to configure/display additional buttons such as Edit Order and View Order in each view click here.