Diary Circles are collections of entries where people can post about topics they are interested in.
To add your entry to a diary circle, you must first be editing the entry. You also must already be a member of that Circle – only Circles that you belong to will allow you to add entries to them.
On the Entry Edit screen, go to the bottom and click the Options dropdown:
Once the options are expanded, click the Circle dropdown:
From the Circle dropdown, you can select any Circle that you are already a member of. To join a Circle, please see Joining a Diary Circle.
If you add your entry to a Diary Circle, it will show up on the homepage of that Circle, but it will also show up in your diary like any other entry – but there will be a Circle icon added to the upper right of the entry to show that it also belongs in a Circle.
Note that the Diary Circle for the entry will not be changed until you click the Publish or Save button to save the entry.