Add options to a picklist without going to the Modules and Fields

I've been working on simplifying the CRM interface with Wizards and Canvas views. Now my users are asking if they can add a new option to a pick list from the Canvas view and Wizards. I can't find any info that gives me the ability to do this in a function.

The ideal solution would be having a "Add Option" button that, when clicked reveals a text field and a "Save" button. The user then enters the new option and clicks save. The code saves the new option and it's available in the pick list.

I have done this in web application development but have no context for making it work in CRM. There are many more limitations with what can be done in Zoho products. Does anyone have any ideas or experience doing something like this?

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