Support for arrays of values for custom amoCRM fields of type text, textarea. Their values are separated by commas. In the form for Radical Form, you can use select multiple, input type=checkbox, input type=radio with a field name like field_name[]. In the plugin settings, specify the name without square brackets - field_name

The ability to use a field named lead_tag_id in the HTML form, in which you can specify the id of the transaction tag or several id tags of the amoCRM transaction separated by commas.