I do not think the Palm Swipe option us available on the A23. if available will be in Settings-Advanced Features-Motions and Gestures- Palm Swipe To Capture.
From Manual: To take a screenshot on the A23, press the power and volume down buttons simultaneously.
You can edit screenshots by opening Gallery > Albums > Screenshots and selecting a screenshot. Then tap Edit (pencil icon). Edit the screenshot as you wish, and then remember to hit Save once you're finished.
To share a screenshot, open Gallery > Albums > Screenshots and then tap and hold the screenshot you want to share. Select Share and use one of the sharing options.
I do not work for Samsung or make Samsung Products but provide independent advice and valuable contributions.
