Hello, Alan, I believe you could accomplish this through Batch conversion. In step 3 of 4 of the Output Options, you can select, Automatic File Name, then in the Automatic File Name popup, you can format the name along with any additional file name components you'd like to include, like Automatic Number. See screenshot below.
Alan, if you are looking for a real powerful and a cheap utility for Windows I suggest;
It is free for personal use but I like it so much that when I was cataloging more than 3,000 file that I donate some funds to them. I have found this to be a very versatile piece of software.
By the way the idea from Rene M will work too. Gracias Ms Morales.
Just a thought that you may not have considered and might save some time. I do the same thing with meetings that I need to make multiple captures for.
First off I am a Windows user and not to familiar with the Mac version so again not sure if this would be a useful option for you.
I have different hotkey capture profiles setup with the naming and other info I need for the different meetings/events. ie; "Google yyyy-mm-dd", "Microsoft yyyy-mm-dd", and they are saved to their respective folders.
This way all the captures for that session are in a folder and named with the info I need.