My client wants a "time" field, separate from a date/time field where the user will type in the mm:ss am/pm. I think the "Input Validation" will help with this. But I am having trouble figuring out how to configure either the "Text Mask" or the "Regular Expression". I'd like the validation to enforce a 1 or 2 digit hour, a colon, a 2 digit minute and a required AM or PM.
For example 05:30 AM or 12:15 PM
Also, Is there a link that explains "Text Mask" or "Regular Expression"?