- I need a custom citation format
- I need a second one for some journals that require a different handling of the data (since there is no author, and I'd like the issue number instead of the date etc.)
It seems I can only have one custom citation format 'attached' to the main one for the bibliography, is that right?
Only one custom citation can be used at a time. But you can have many different different custom citation formats (that can only be used one at a time with any given format).