Reply To: Threading filled frames

Actually, it’s very easy!

1. Use the Selection tool to select either one of the frames.
2. Then (if you have the main story selected), click the out port (lower-right corner); or (if you have the endnote frame selected) click the in port in the upper-left corner. That loads the place cursor.
3. Click the place cursor on top of the other frame.

Here is more about threading frames together:

InDesign 101: Flowing Text