I'm wanting to do a project where the requirements (dictated by others, not in my control) are such that I need to have image filenames and folders with custom details.

For example, to include the time in UTC (not local time) or the target name, etc.  e.g. ABC_<UTC_TIME>_DEF_<Target Name>.FIT in a folder XXX_<YYMMDD>_ZZZ, etc.

I'm looking for suggestions on how to handle this with an INDI client, preferably on the fly as the image capturing is done.  Ideas?