GameWhen you select a piece now shows the path the courier will take from it's HQ with orders.
You ideally want that to be short but the hq to be safe from enemy,

The driver for which piece you're giving order is you click to choose it.
You may then click esc to de select or click on another piece.
Whichever way you do this, the previous courier path will be removed.
That choosing a piece also sets up the container for orders.
Currently, if you go back to a piece you already input orders for you lose those.
Final behaviour is still TBD.
I'll likely allow clicking a previous move arrow to allow additions to this turns orders.
Once a piece is underway though, you're likely to have to issue a halt order first and get a known location before you can issue further move orders.
A move has to be from a given location ( point ) to another in order to carry out calculations.
We can't do "just go to X, from wherever you are".