HI :-) It sounds like you're posting them to the GROUP... rather than to your PROFILE. You should be posting them to your PROFILE, and then using tags to tag yourself to the groups. This got me, too... when I'd first started.
For example: when you create a Wiki to handle your notebook, and add "pages" to it (containing your reflections), there is a dropdown under each page that allows you to post to your own profile. See my screenshot for an example : https://fs.simkinsit.com/index.php/s/dEMLLFdo2pbYksE
The activity pages show you all the posts that you are allowed to see on the site. This is sometimes referred to as the activity stream or river. It is a great way to keep up to date with what has been posted on the site. You can configure the river to show things that particularly interest you - in your settings you can configure activity tabs to display activities from people in specific groups and your circles.
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