Okay, I found Still Image Default Duration (thanks) but that still doesn’t quite address my problem in full – what if I imported 30 clips, three batches of 10, and I wanted to set the first batch (all at once) to 20 frames in length, the second batch to 70 frames in length, etc – is there any way to do that? Or do I just change my default preferences, import the first lot, change my preferences again, import the second lot, and so on?