The final step is to activate the page, adjust its visibility, and set its position in the Salesforce1 navigation menu and Lightning Experience app navigation bars. Your users can’t access the app page until you activate it. Perform the following steps to activate the Lightning App Page that you have just created:

1. Click on the Activation button; it is available in the top-right corner of the page.  

2. Under PAGE SETTINGS, it will allow you to change a few things, as mentioned here:

   • The App Name will auto-populate from label, which you entered in step three of Hands on two--embedding a Flow into Lightning App Page. For the current scenario, don't change it. The label that you give the Lightning Page is used as the label for its custom tab.

   • The Icon will allow you to choose the icon that represents your app in Salesforce1 and Lightning Experience. For the current scenario, select Castle as an icon by clicking on the Change... link.

   • On the Page Activation section, when you activate the Lightning App Page, a custom tab (Lightning Page Tabs) is created for it. It allows you to manage the tab visibility from the setup. As of now, keep the tab’s visibility open to all users, that is, Activate for all users:

At the end, your page settings should look like what is shown in the preceding screenshot. Wait, don't rush to active the page now; otherwise, your users can't access this page until you add it to Lightning Experience or Salesforce1.

3. The next step is to configure the LIGHTNING EXPERIENCE tab. To do that, perform the following instructions:

   1. Click on the LIGHTNING EXPERIENCE tab.

   2. Select a Lightning app; for the current scenario, select the Sales app, and then click on the Add page to app button, as shown in the following screenshot:

      

The page you are adding to the Lighting Experience menu bar will appear in the second position by default. If you put it into the top position, it becomes the landing page for all your Lightning Experience users.

4. The final step is to configure the SALESFORCE1 tab. To do that, perform the following instructions:

   1. Click on the SALESFORCE1 tab.

   2. For Salesforce1 Activation, select the Salesforce1 Navigation Menu, and then click on the Add page to app button. It should look like what is shown in the following screenshot:

The page you are adding to the Salesforce1 navigation menu will appear below the Smart Search Items menu item. If you leave the Brokerage Calculator page there, it will appear in the Apps section of the Salesforce1 menu. Let’s leave it there.

5. Once you are done, click on the Save button.

Now the Brokerage Calculator app page is ready for your Salesforce1 and Lightning Experience users. Your users can access the Real estate commission calculator Flow from the Salesforce1 mobile app with the Lightning runtime experience. It should look like what is shown in the following screenshot in the Salesforce1 mobile app:

You will also be able to access Brokerage Calculator on Lightning Experience, and it should look like what is shown in the following screenshot:

Use App Pages to open up your standalone Flows (Flow that don't require a Record ID to start) access to your users via the Salesforce1 mobile app and Lightning Experience.