Since version 5 of SEOPress, you can now edit your SEO metadata from any page builder / theme or even without an editor.
The beacon appears by default in the lower left corner of your screen for user roles with edit_post
capability.
You can move it anywhere on your screen, just hover it to see the double arrows icon appear to move it with a drag and drop.
If you want to enable / disable it, just go to SEO, Advanced, Appearance tab.
Check / uncheck the “Disable the universal SEO metabox” option and click Save changes.
That’s it!