That depends on a variety of factors. What EMM are you using, if any? How are your devices enrolled and Managed (eg. COSU with DA, COSU Android Enterprise with DO, Work Profile, etc.)? What Launcher are you currently using on the devices (eg. Enterprise Homescreen, SOTI Lockdown, default launcher, etc.)?

Ah i think you may have misunderstood its the android lock screen some of the users have been able to access the camera and set a lock screen image.

So i have a image file i need to use but have no way of applying failing that to try and delete the images from a specific folder on the device.