To customize your Banner, go to Dashboard > Appearance and select Customize. Click banner upload.
To switch from Banner to Metaslider:
Check box to switch to Metaslider.
If you would like to switch to a new metaslider, you need to enter the appropriate metaslider ID in the text box.
Under the MetaSlider settings, scroll down until you see the "How to Use" section, and copy the Metaslider ID.