Are you using Live Captions or Static Captions? Live Captions are limited to one line because they are text variables. Try converting to Static Captions which can be more flexible.
Thanks for answering. Trying to use live captions because I'm making a template which I hope to be able to use by just re-linking to another image. Yes, It can be done with static captions,but I was hoping there was something I had missed that might be a bit more elegant.
Anyone else? Can anyone at least confirm that what I want to do is not possible? Thanks.
I have created a solution for wrapping issue of Live captions, have a look at GitHub - Manan-Joshi/TruLive-Caption: Live caption for Images in Indesign
In case you want some customisations, let me know. I will incorporate the suggestions if they meet generic requirements