Hi @pjeaje
You can get this functionality from this plugin: https://wordpress.org/plugins/acf-role-selector-field/
This plugin helps you out if you need to have the ability to select one or more user roles. Roles can be chosen with a select element (single or multiple choice), checkboxes or radio buttons. Roles can be returned as a role name or a role object.
You can also check this other plugin with the same functionality: https://github.com/lewismcarey/User-Field-ACF-Add-on
