Export file naming templates for jpgs?
I've searched for this and can't find an answer. I'm using Lightroom 8.3.1 on MacOS Land trying to export two batches of jpgs from raws in the cloud, one batch at print resolution and one for web. I can't figure out how to do any useful export naming to distinguish the two batches of files and keep which raw they came from. In DxO and CaptureOne I've been able to build templates like filename_print.jpg and filename_sm.jpg to distinguish the resolutions.
In Lightroom the "Custom" setting doesn't seem to inlude the filename with the custom text. All I can get it to do is "print1.jpg" "print2.jpg" and so forth. I must be missing something. Are there fields I can use in the "Custom" box to get normal custom names and if so where can I get a list of them?
Thanks

