Now, if you have used any Custom Attribute, then you have to follow the steps below:
Go to Users >> User Profile Fields.
Click on Create an Attribute to add your configured attributes.
Add your configured attributes.
Add the configured custom attributes with suitable field type. You can select anyone of these options as your field type -Text, Dropdown Select Box, Checkbox and Date Picker
For field types - Dropdown Select Box and Checkbox, you can select multiple values and separate them using semicolons.