Is your feature request related to a problem? Please describe.
Users have to edit the config.json file directly in order to customize snapshot rules down to individual days (like "only on Day 28"). It would be nice if this could be updated from the UI Config as well.

Describe the solution you'd like
Users can edit individual days on the UI Config.

Describe alternatives you've considered
Users will otherwise just need to edit the config.json file directly if they want to customize rules down to the individual days (as opposed to just certain weekdays, which can be done from the UI Config).

Additional context
This has some code changes added already, but they are currently commented out due to bugs that were encountered. Need to implement in a way so that the user can edit certain days of the week and certain days of the month, without either one conflicting with the other. If anyone is interested in working on this, leave a reply to let me know and I can explain in more detail and point to specific places in the code. But for now just logging this Issue for tracking purposes to hopefully address sometime at a future date.