Display the list which sends notifications to user


I’m creating an app that sends texts to phone numbers the user enters in the preferences stage. Currently my app is only able to add to the “phone” list, I want to create a page where the user can see the numbers they have entered and have a check box next to each number to include or not include it at the time.

Here is what I have so far:
preferences {

page(name: "phone number", title: "Notify Contacts", install:false, uninstall:false, nextPage:"Motion"){
    section("Send Notifications?") {
       input ("phone", "phone", title: "Warn with text message", description: "Phone Number", multiple: true, required: false)
       log.debug "phone number was taken"
page(name:"Motion", title: "Where to Monitor", uninstall: true, install: true){
    	input "sensors", "capability.motionSensor", required: true, title: "Which Room?", multiple: true


def motionSensorHandler(evt) {
log.debug "recipients configured: $recipients"
def message = "Movement was detected in the ${sensors.displayName}!"
sendSms(phone, message)

Any help is much appreciated! Thanks!