TOPIC: Option to make custom field's limited use "pool" global

The limited uses on custom fields is awesome, thanks for adding it.
It'd be even better if we had an option to make a specific field share its user tally amongst all events in the system.

Here's the scenario this would address: My organization has members, non-members, students and retirees, and each has their own costs and access to different limited-capacity workshops. There are tons of variables...20 workshops, 6 meals, 5 combinations of single-day registrations, meal-only attendees, etc...too much for one event registration to handle. If I could just make different events, one for each kind of user, I can do it with ease. Problem is, the "pool" of workshop attendees resets with each event, so I'd quadruple-book them. If I could make the same pool of limited users apply across all of the events I make, then I'd be set.

Another scenario: One building, three different events going at the same time. The three events are unrelated, with different attendees and programs, but each shares the same lunch area (and a limited number of sandwiches). With this new feature, we could make a custom sandwich field, and all three events can pull from the same limited-quantity pool of sandwiches.

The module found at http://joomlamo.com/joomlamo/products/other-joomla-extensions/dt-register-tally-fields.html . With a sandwich choice as a custom field in both events, the module will display the number of sandwich choices for each event

It can also be used to display a tally of other choices for one event. It will tally any custom field except text fields. For instance a tally of seminars selected by those that register.