The MageDelight Customer Attributes extension offers powerful options to create customer attribute in Magento 2 with relationships:

1. Dependent Attributes: Create attributes that display based on the value of other attributes

Step 1. Navigate to attribute settings > Dependencies tab

Step 2. Select parent attributes and triggering values

Step 3. Configure which values show for specific parent selections

2. Attribute Groups: Organize related attributes by:

Step 1. Go to MageDelight > Customer Attributes > Attribute Groups

Step 2. Creating named groups for related fields

Step 3. Assigning attributes to appropriate groups

Step 4. Ordering attributes within groups

3. Form Assignment: Determine which related attributes appear together on:

Step 1. Registration forms

Step 2. Account dashboard

Step 3. Checkout pages

Step 4. Admin panels

4. Conditional Display: Create sophisticated conditional logic between multiple attributes without coding

These relationship features allow businesses to collect relevant data while providing a clean user experience.

Read this How to Configure Customer Attribute in Magento 2 guide to setup this extension.

Here are the few more resource to help you get most out of this Magento 2 Custom Attributes Extension.

• How to Create Customer Attributes in Magento 2
• How to Set Custom Validation Message in Magento 2
• How to Create Customer Attribute in Magento 2 Programmatically