In this section, you will need to add the FilesConnect component to your existing flexi page layouts using Lightning App Builder.
To add the component to a lightning record page, navigate to Setup > Object Manager.
Select the object to modify
Select Lightning Record Pages
Select a lightning record page, then click Edit to add the component to an existing lightning page layout. This will launch the Lightning App Builder
Note: You may also click Edit Page in the Setup dropdown menu from the object record page to get to the Lightning App Builder
Once in the Lightning App Builder, from the list of components on the left panel, find the FilesConnect component under the Custom-Managed components section and drag and drop it onto the page layout
Click Save
Click Activate from the Page Saved modal or click Activation… from the Lightning App Builder if activation is required