Dynamically update rules based on Select option

Hello, Is it possible to change required to true of false for other form fields based on Select option ? For example I have a Select field named service with options hourly and point-to-point and I have some fields like number_of_hours, point_from, point_to the number_of_hours is required when hourly is selected point_from is required all the time point_to is required when point-to-point is selected. It works great with the normal validation rules like requiredIf('service','hourly'); but I am trying to make it work a bit dynamically using the config values which users can set themselves for their forms. so basically what I am trying to do is to set the required rule within afterStateUpdated for Select field. Please check the image attached. Thank you