Prerequisites

1. sFiles is already set up in your Salesforce org (You ran the org and object setup wizards).
2. You are an administrator in your Salesforce organization with rights to create Visualforce pages.

Steps

1. Navigate to your Salesforce Setup page. 
2. Type Visualforce in the Quick Find box, and click Visualforce Pages. 
3. Click New.
4. For the name and label, set something that would be easy to recognize, such as sFilesAccount.
5. Copy and paste the following code into your Visualforce Markup: 

   <!--
        DESCRIPTION: THIS VISUALFORCE PAGE DISPLAYS SFILES INSIDE VISUALFORCE
        NOTES:       SET STANDARDCONTROLLER TO YOUR OBJECT NAME
   -->
   <apex:page standardController="Account" showHeader="false" lightningStyleSheets="true" standardStylesheets="false" cache="false" sidebar="false" applyHtmlTag="false" applyBodyTag="false" docType="html-5.0">
           <apex:includeLightning />
           <div id="lightningvf" />
           <script>
               $Lightning.use("fileforcem1:LightningWrapper", function () {
               /* Change 'standard' to 'enterprise' if using Enterprise license. */
                   $Lightning.createComponent("fileforcem1:standard",
                       { recordId: "{!Account.Id}", object: "Account", visualforce: true },
                       "lightningvf",
                       function (cmp) {
                       }
                   );
               });
           </script>
   </apex:page>

6. Wherever "Account" is used in the code above, change to your own object name. This is the technical name of your object (e.g., "Account" or "My_Custom_Object__c"). 
7. Click Save. 
8. You should now be able to add this Visualforce page to your object's page layout.
9. We recommend a minimum of 300 for Height in a full-width section. You do not need to check the Show scrollbars checkbox. 
10. When all set up, you should see the component in your page layout as shown below: 
11. Congratulations! You are all set up!