Help How to change the security code

[victek]

Back when I first got the phone I set a security code. It's the code that needs to be entered before uninstalling apps. I haven't lost it, but I want to change it and can't figure out how. This is different from the screen lock PIN. Any help appreciated...TIA

 

[victek]

OK, I figure out that the security code was part of the anti-theft app I installed and not a system feature - end of story