I have exhausted all of 3 days trying to research how to do this but due to my limitations being new to the developing world I am afraid I really need some help. Any help is really appreciated. 
 

Controller

public with sharing class Editpositions {
    
    public Position__c myPosition;
    public Position__c editpos {get;set;}
    public Job_Posting__c editpost {get;set;}
    
    
    public Editpositions(ApexPages.StandardController controller) {
        this.editpos = (Position__c) controller.getRecord();
        
    }
    public Position__c getPosition() {
        return myPosition;
        
    }
    Public List <SelectOption> getitems() {
        <SelectOption>() options = new List<SelectOption>();
        //   for (Employment_Website__c mySite = [SELECT Id, Name FROM Employment_Website__c]);      
        //  options.add(new SelectOption(mySite.Id,mySite.Employment_Website__c)) 
        // Loop through the list and update the Name field  
        //    return options; 
    }
}

The issue is where I have put the code in comments // because it was giving me all kinds of errors I just have no idea what I am doing at this point all I know is that after <SelectOption>() options = new List<SelectOption>(); I need to specify to for loop my employment website to selecOption or something like that. 

VF Page

<apex:page standardController="Position__c" extensions="Editpositions">  
    <apex:sectionHeader title="{!Position__c.Name}" subtitle="Edit Records"/>
    <apex:form >
        <apex:pageBlock title="Create and edit Job Positions">
            
            <apex:pageBlockButtons location="both">
                <apex:commandButton action="{!save}" value="Save Record"/>
                <apex:commandButton action="{!cancel}" value="Cancel"/>
            </apex:pageBlockButtons>
            <apex:pageMessages />
            
            <apex:pageBlockSection title="Create New Position" columns="2">
                <apex:inputField value="{!Position__c.Name}"/>
                <apex:inputField value="{!Position__c.Responsibilities__c}"/>
                <apex:inputField value="{!Position__c.Job_Description__c}"/>
                <apex:inputField value="{!Position__c.Skills_Required__c}"/>
                <apex:inputField value="{!Position__c.Educational_Requirements__c}"/>
                <apex:inputField value="{!Position__c.Java__c}"/>
                <apex:inputField value="{!Position__c.Apex__c}"/>
                <apex:inputField value="{!Position__c.C__c}"/>
                <apex:inputField value="{!Position__c.Javascript__c}"/> 
                <apex:inputField value="{!Position__c.Travel_Required__c}"/>
                <apex:inputField value="{!Position__c.Location__c}"/>
                <apex:inputField value="{!Position__c.Open_Date__c}"/>
                <apex:inputField value="{!Position__c.Hire_By__c}"/>
                <apex:inputField value="{!Position__c.Min_Pay__c}"/>
            </apex:pageBlockSection>
            
            
            <apex:dataList value="{!Position__c}" var="Position__c">
                <apex:outputText value="{!Position.Name}"/>
            </apex:dataList>
            
            
        </apex:pageBlock>
    </apex:form>
</apex:page>

Allso I don't know how to let the two communicate like what code I need to put into the VF Page to run that. 
Once the process is it complete it should let me have a picklist in the Standard object Position where I can choose employment websites to choose to post job postings to. But I have to be able to save more than one website multi picklist type. Once I complete this it should work hopefully.

Thank you for any and all help!
 

I have exhausted all of 3 days trying to research how to do this but due to my limitations being new to the developing world I am afraid I really need some help. Any help is really appreciated. 
 

Controller

public with sharing class Editpositions {
    
    public Position__c myPosition;
    public Position__c editpos {get;set;}
    public Job_Posting__c editpost {get;set;}
    
    
    public Editpositions(ApexPages.StandardController controller) {
        this.editpos = (Position__c) controller.getRecord();
        
    }
    public Position__c getPosition() {
        return myPosition;
        
    }
    Public List <SelectOption> getitems() {
        <SelectOption>() options = new List<SelectOption>();
        //   for (Employment_Website__c mySite = [SELECT Id, Name FROM Employment_Website__c]);      
        //  options.add(new SelectOption(mySite.Id,mySite.Employment_Website__c)) 
        // Loop through the list and update the Name field  
        //    return options; 
    }
}

The issue is where I have put the code in comments // because it was giving me all kinds of errors I just have no idea what I am doing at this point all I know is that after <SelectOption>() options = new List<SelectOption>(); I need to specify to for loop my employment website to selecOption or something like that. 

VF Page

<apex:page standardController="Position__c" extensions="Editpositions">  
    <apex:sectionHeader title="{!Position__c.Name}" subtitle="Edit Records"/>
    <apex:form >
        <apex:pageBlock title="Create and edit Job Positions">
            
            <apex:pageBlockButtons location="both">
                <apex:commandButton action="{!save}" value="Save Record"/>
                <apex:commandButton action="{!cancel}" value="Cancel"/>
            </apex:pageBlockButtons>
            <apex:pageMessages />
            
            <apex:pageBlockSection title="Create New Position" columns="2">
                <apex:inputField value="{!Position__c.Name}"/>
                <apex:inputField value="{!Position__c.Responsibilities__c}"/>
                <apex:inputField value="{!Position__c.Job_Description__c}"/>
                <apex:inputField value="{!Position__c.Skills_Required__c}"/>
                <apex:inputField value="{!Position__c.Educational_Requirements__c}"/>
                <apex:inputField value="{!Position__c.Java__c}"/>
                <apex:inputField value="{!Position__c.Apex__c}"/>
                <apex:inputField value="{!Position__c.C__c}"/>
                <apex:inputField value="{!Position__c.Javascript__c}"/> 
                <apex:inputField value="{!Position__c.Travel_Required__c}"/>
                <apex:inputField value="{!Position__c.Location__c}"/>
                <apex:inputField value="{!Position__c.Open_Date__c}"/>
                <apex:inputField value="{!Position__c.Hire_By__c}"/>
                <apex:inputField value="{!Position__c.Min_Pay__c}"/>
            </apex:pageBlockSection>
            
            
            <apex:dataList value="{!Position__c}" var="Position__c">
                <apex:outputText value="{!Position.Name}"/>
            </apex:dataList>
            
            
        </apex:pageBlock>
    </apex:form>
</apex:page>

Allso I don't know how to let the two communicate like what code I need to put into the VF Page to run that. 
Once the process is it complete it should let me have a picklist in the Standard object Position where I can choose employment websites to choose to post job postings to. But I have to be able to save more than one website multi picklist type. Once I complete this it should work hopefully.

Thank you for any and all help!
 

The challenge is:

You've been given a requirement to keep Contact addresses in sync with the Account they belong to. Use Process Builder to create a new process that updates all child Contact addresses when the address of the Account record is updated. This process:Can have any name.
Must be activated.
Must update Contact mailing address fields (Street, City, State, Post Code, Country) when the parent Account shipping address field values are updated.

I start with Accounts when records is created or edited.
Filter criteria where accounts shipping address (street, city, state, zip code) is changed (used "or" logic).

I am stuck on the next step "add action".  I started with action type "Update Records".
On objects, I can't seem to change Accounts to Contacts.  Why?