Let’s take an example of adding a lightning component on Account Record (the same process can be followed to add a lightning component on other standard or custom objects record).
- Go To Account -> Select any record -> Click on setup icon -> Click on Edit Page
- Account record page is now open
- Search component: MassFileDownloadLightningComponent or you will see the component in the custom section on the left side menu.
- Drag and Drop MassFileDownloadLightningComponent to Anywhere in record page wherever you want to display download files and attachment records.
- Click on Save
- Click on Activate and follow instruction of activation (If record page is not activated).