React-Hook-Form. Diffrent validation on diffrent events

[Gray-Starling]

I have just started using React Hook Form and I can't figure out how to implement different validation for different events.

So, i have an input

 <input
        type="text"
        {...register("name", {
          required: 'is required',
          maxLength: {
            value: 40,
            message: 'max length is 40',
          },
          pattern: {
            value: /^[a-zA-Z]+(?:-[a-zA-Z]+)*$/,
            message: 'wrong format',
          }         
        })}
      />

I want the "required" rule to trigger only on the "onSubmit" event and not on any other event. And all other rules, no matter what I specify, should trigger on the "onBlur" event.

I specified the onBlur mode in the useFome options for this.

const {
    register,
    handleSubmit,
    formState: { errors },
    watch,
  } = useForm<IFields>({
    mode: 'onBlur',
  });

But in this case, if I focus on the input and then remove it, the required rule will still work.

I tried this options.

    formState: { isSubmitting } 

 required: isSubmitting ? 'is required' : false,

But the options isSubmitted and isSubmitting are triggered only after validation.

Please tell me what I need to do to implement validation logic on different events. 🤔