Am unable to unlock two frames which somehow locked themselves. Cannot reproduce so far in new document. Here's how I got there :
Document with text auto flowed through ~dozen pages, based on same master page. Created picture frame and text frame for caption. Placed image in picture frame, selecting no scaling. Grouped the two and set block to wrap text around one side. Image needed an offset to appear centrally aligned, so ungrouped, selected image in Layers and shifted it left a little. I then find both frames locked. Can unlock image but not its frame. Cannot unlock (tried menu option and lock/unlock icon in Layers panel).
Without being able to unlock the two frames, I cannot even delete 'em and start again.
Very grateful for any suggestions. Apologies if I've missed something. (Have trudged through bug reports.)
MacOS 10.13.6 on MacBook Pro (late 2013)
Programming_Period.afpub