Changing the frequency using a 6 pole switch

I have a project were I have a 1hhz frequency output with an Ontime and an off time, when I press a putton and hold it the frequency changes to 10khz ie using an if statment to do this.
Now what I want to do is use a 6 pole switch connected to d5,d6,d7,d8,d9,d10configured as inputs
a high on any of these produces a unique on off time on say d3 configured as an output.
This is my code for 1hz and 10hz outputs.

int OutputState=LOW;
unsigned long previousMillis1=0;
long OnTime;// on time of waveform

long OffTime;// off time of waveform
int pushbutton=6

;
void setup() {
// put your setup code here, to run once:
pinMode(Output,OUTPUT);
pinMode(pushbutton,INPUT);
Serial.begin(9600);

}

void loop() {
// put your main code here, to run repeatedly:
unsigned long currentMillis=millis();
if (digitalRead (pushbutton==HIGH))
{

OnTime=50;
OffTime=950;
//Serial.print(OnTime);
}else {

OnTime =10;
OffTime= 90;

}
Serial.println(OnTime);
if ((OutputState==HIGH)&&(currentMillis-previousMillis1>=OnTime))
{
OutputState =LOW;
previousMillis1=currentMillis;
digitalWrite(Output,OutputState);
}
else if ((OutputState==LOW)&&(currentMillis-previousMillis1>=OffTime))
{
OutputState=HIGH;
previousMillis1=currentMillis;
digitalWrite(Output,OutputState);
}
}

Can someone explain the simplest way of doing this

I would put the frequencies in an array and choose the frequency by the index in the array and the switch pins in another. The index to be found by looking for the closed pole of the switch.

Do you have a 10k pulldown resistor from pin 6 to GND?