Language file of some themes is defined to be POT.
Hint: To detect the difference between PO and POT file, you can refer to this source:
http://betterwp.net/wordpress-tips/create-pot-file-using-poedit/Thus, it certain that you will have to make some minor changes to steps of modifying and translating strings

Google requires you to register an API key so that you can show Maps on the site. Please follow these steps to get the key:

Step 1: Login to your Google account and Go to this link https://console.developers.google.com

Step 2: Agree with Terms of Service if this is the first time you have gone to this link.

Step 3: Go to this link Google APIs , click on this one link of Google Maps JavaScript API  and choose Enable.

Besides, go to Google APIs , search for Google Place API Web Service  and click Enable

Step 4: Select an existed project or Create new, then click Continue.

Step 5:

Choose HTTP referrers (websites) in Key restriction section

Fill in your domain. You can use multiple domains, but one should match the current domain. For example, link of your site is https://www.jobmonster.com, you will enter *.jobmonster.com/*

Step 6: Click Create.

Step 7: Copy the API Key then paste into the setting above.

For more reference, you can see: Official Document, Google Blog

In case, you only want to show locations which was included in job postings. Please go to framework/job/job-default-fields.php> change this code

To know the reason why you need to override a function of parent theme in child theme, please refer to these sources:

https://paulund.co.uk/override-parent-theme-functions
http://code.tutsplus.com/tutorials/a-guide-to-overriding-parent-theme-functions-in-your-child-theme–cms-22623

To override a function, please add all codes of that function to functions.php file in childtheme:

To make menu transparent, please add the following css to Customizer> Custom code> Custom css:
.noo-header {
background-color: #FFFFFF ;
width: 100%;
/* top: 0; */
position: absolute;
}
.navbar {
border-bottom: 1px solid #f2f2f2 ;
width: 100%;
background-color: rgba(255,255,255,0.5);
border: 1px solid rgba(255,255,255,0.5);
}
.navbar-fixed-top {
background-color: #ffffff !important;
}

Note: When you scroll the menu down and want it to be transparent, please remove this CSS:
.navbar-fixed-top {
background-color: #ffffff !important;
}

There are 3 ways for you to avoid losing changes in edited language file:

1.  You can move all language files to wp-content
– The language file of Theme: ../wp-content/languages/themes
– The language file of Plugin: ../wp-content/languages/plugins

2.  To avoid losing the edited files after you update the new version, we recommend that you should install childtheme and move all language files to wp-content/themes/noo- theme_name – child/ languages. Remember to add the following codes to functions.php file in childtheme:

add_action( 'after_setup_theme', 'my_child_theme_setup' );
function my_child_theme_setup() {
load_child_theme_textdomain( 'noo', get_stylesheet_directory() . '/languages' );
}

For example, as for Jobmonster and citilights theme, you will have noo-jobmonster-child and noo-citilights-child relatively.

Learn more about child theme: How to install childtheme
Learn more about translating with Poedit software: Translate and Modify Texts With Using Poedit

3. The safest method is that you save all language files on your computer. After the update, in case you lose files, you will be able to upload them again via FTP.

To add a new template to your childtheme, please follow these steps:

 Step 1: Paste a page template file located in the parent theme into the childtheme.

Notice that the directory of this file in both parent and childtheme must be similar.
For example, you want to modify Full-Width Template in Jobmonster childtheme. See this image, the directory of page-full-with file is this one in parent theme:

So now you will paste this file into the childtheme. You have to assure that the directory to that file in childtheme is the same directory in parent theme. You can figure out that:

Step 2: Modify name of the file

You can give another name to the file in childtheme. You can call it, for instance, page-full-width-child. After that, you will open this file and change Full Width to Full Width Child in the line of Template Name:

You can implement steps as follows to show packages on the Package Page:

Step 1:  Go to Products> Product categories> create a category, for example, it is Job Package and its slug is packages

Step 2: you will go to Pages> create Packages page> paste this shortcode [noo_job_package_list product_cat=”packages”] into the content of the page

Notice that “packages” in the shortcode above is the slug of job category shown on packages page.

Step 3: go to Products> create a new product> choose a Product category

Step 4: you will go to Jobs> settings> Job packages> choose Packages page and shown package category> save changes