OFSC Collaboration - data retention

Content

I'm struggling to find any information in the Collaboration documents around the retention of chats and images.

Does anyone know:

• How long collaboration chats are retained for?
• If there is a storage limit for image data?

The context for this is that we're looking at our field resources being able to send a central team images of the work done for some of their completed activities.  As we use an in house app instead of mobility for our field activity management, we can't add a property directly to the job without some development work to enable the in house app to take photos and pass them into OFSC.