I use the SSL method, but I thought if you used the Master Page method, you got to choose where and how the placeholder appeared, but I don't know this for sure.
Jeff is correct. When Breadcrumbs are added via the Single Source Layout recipe, they are added to each and every HTML topic. Because you are doing this on a global basis, you see the options for placement.
When adding them via a Master Page, you are free to insert the placeholder wherever you like on the Master Page. So there is no need to provide placement options as the placement is determined by where you insert the placeholder. Additonally, if using the Master Page method, you may be more choosy about exactly which topics receive the breadcrumbs.
The project I inherited had the breadcrumbs selected in the SSL options, but I needed to have pop-ups display without the breadcrumbs, hence I added it as a placeholder inside one master page that is applied to all topics. The other master page I created for the pop-ups has no breadcrumbs placeholder so this works well for this project. I think Rick gave me this idea to use in the WebHelp SSL generated inside RH 9.