Onyx Boox Max 2 Pro Navigation Button/Handwriting

[Faeryink]

Hello,
Does anyone know if there is a way to flip between the pdf (library) and the Notes app rapidly? On the Navigation Button I have added Notes as a quick link, but there is no option to link the Library button in the Navigation Button.
Now currently going from the Notes app back to the Library I have to use the back button on the navigation button and then open the pdf/epub file. I know that I can use the sidenotes, but I really appreciate the AI feature in the Notes app so I thought I would use that instead.

Sorry if the question is a bit unclear but I thought maybe I will ask around for some help. I don't think there is a way to import sidenotes into the Notes app so I can convert it into text. Would be nice, but I think the Notes app requires live input to convert the handwriting to text.

Thanks in advance!!