Control reposts by hashtags?
You can control Friends+Me reposts by using hashtags. Just append a hashtag to your post.
If you don't want to repost your publicly published activity at all, you have to use hashtag #noshare , #plusonly or #ns.
Don't repost this post. #ns
Enabled scheduling can be selectively disabled per post, all you have to do is to include #nq hashtag within the Google+ post.