add_filter( 'arm_is_dripped', 'your_function', 10, 3);
function your_function($isDripped, $rule_type, $rule_options) {
    //$isDripped True if post/page is dripped, False if not dripped.
    //$rule_type Drip Rule Type.
    //$rule_options Drip Rule Options.
    if ($rule_type == 'custom_type') {
        $isDripped = false;
    }
    return $isDripped;
}

add_filter( 'arm_change_drip_content_in_admin', 'your_function', 10, 2);
function your_function($rule_text, $drip_rule) {
    //$rule_text Drip Rule text
    //$drip_rule Drip Rule array
    if ($drip_rule['rule_type'] == 'custom_type') {
        $rule_text = 'Custom Type';
    }
    return $rule_text;
}

add_filter( 'arm_drip_rule_types', 'your_function');
function your_function($rule_types) {
    //$rule_types Drip Rule Types
    $rule_types['custom_type'] = 'Custom Type';
    return $rule_types;
}