Part 3 – Approach 2 – Completely detailed Format GUI
This approach assumes the new feature is desirable by all users and it’s worth extra GUI complexity to expose it in it’s full glory. To be clear, as multiple levels of path and digits in the sequence are supported, there are 35 usable tags available. Due to this complexity, a whole new dialog would be required. I’d see this as using a scrolling list of tags or ‘sea of tick boxes’ to build the format preview that is returned to the Format textbox when complete.