In steemit.com I have set: posting in my blogs!
Each post is posted in my blogs unless I type the hive plus number as a first tag. In that case, it only shows up in my posts and the community and I need to resteem my post to be seen by everyone. But to be honest I resteem each post because I am not sure if it works good enough.

The option where to post I could only choose if I sign out first and next sign in.