Qr attendance app

I was making a qr attendance app with reference from
https://youtu.be/hynTBp-3toQ but rather than in and out time I want to insert' p'for present and 'a' for absent in the Excel sheet. How can I do this?

Welcome Srijan.

Here are links to App Inventor discussions about attendance apps Search results for 'attendance' - MIT App Inventor Community

One of them may help you decide what to do.

Otherwise post an image of your Blocks here to get specific advice.