The cursor position will follow the printing of the screen content, so you have to operate the cursor. more API information you could refer this page. https://docs.m5stack.com/#/en/arduino/arduino_home_page

I assume you'll want to put the certificate in the flash. there are various ways you can transfer files to the flash, check this video on how to do so https://www.youtube.com/watch?v=bdyZx2KC54Y

@kgobes Yes Visuino is block coding, I thought that what you were after wanting to use UiFlow. Of course the latter can display the dose as well. Cheers !