How to set a rule for a Bitrix24 CRM form field (details in the question description)?

Question

1C-Bitrix

Hello. How to set a rule for the field of the Bitrix24 CRM form, so that if you put a certain value from the list of values ​​of the form field, then another value from the list of values ​​of another field disappears (hidden)? In the standard functionality, I found only one rule for the field, but it is not much different (if the field is equal to the field value, then hide/show the field) that I need. Help me please!