More info on Entry Routing Behavior?

We have been adding modules to the side of each of our easyblog blog posts by creating a menu item each time and assigning the module to it. Needless to say, it has been tedious. Recently, we found out about the routing settings in the "SEO" section of the settings. Apparently, there is an option to set the "menu item id" of each and every easyblog page. This would give us a single menu item to assign our modules to and they would show up on every easyblog post, which is what we want.

However, we are curious about the "Default" routing behavior and the "Entry Routing Behavior" settings that are next to it. How does the default method work? The descriptions are sparse and only mention that easyblog automatically determines the menu item id by inspecting the "view" part of the url. Furthermore, the description on the "Entry Routing Behavior" only says that it shouldn't be changed if it isn't understood. The reason I ask is because we may, in the future, want to use our easyblog component for multiple blogs and the modules should only show on all posts of each corresponding blog. For example, module A should show on all posts for blog A, module B should show on all posts for blog B, etc. If we use the "force menu item id" method, we would run into issues with multiple blogs. Is there a way to keep the "Default" routing behavior and also have a module show up on every blog post? (without us having to manually create tons and tons of menu items)