Custom battle settlements and defences

[Smaug]

Why do my custom battle settings not allow me to put any settlements or defences in the custom battle? If it is so with all users, when can I download them to make them available?

[Gigantus]

Some maps do not allow settlement, like the battle of Arsuf. There is a little marker in front of those maps.

[Smaug]

Some maps do not allow settlement, like the battle of Arsuf. There is a little marker in front of those maps.

This I know. The thing is that it 'allows' me to choose defences and settlements when they are available only that when I click the option, there is none to be chosen from.