Hi Jennifer.
We need to validate a phone number custom field
We need to validate character count on Client’s Name custom field
If you’re ok with JavaScript RegExp, we can add its support for ACF addon. If you’re not very good at JavaScript RegExp (I’m not much of an expert here either), I can try to assist you in composing the rules, provided you can explain the rules of validation for your Customer Name and Phone Number fields.
Just a heads up you cannot search your support forum. I tried to search for validate and nothing came up.
https://s-plugins.com/forums/search/validation/
But to be frank, there were not much requests for custom fields validation, that’s why there is not much comes up when you search.