Ember Changeset Validation Form With Relationship Data

Hi, i have been looking for an example of how to implement ember-changeset-validation on form that contain multiple relationship data as an input. Let’s say i have form with field of user.phone.number, how to i add the validation for that field ? And also how to handle multiple select field validations ?

My current ember version is 3.5.1 and as the docs github said to use addon version 2.2.1