Baofeng GM-15 PRO program ANI.ID numbers?

[WRWU395]

My local repeater now requires an ANI.ID number in order to use it. My BF GM-15PRO has a menu to program the four-digit number, but I cannot change the factory 12345 already written to the radio. No button changes the numbers. Please help.

The Radiooddity software does not show a way to program the numbers either.

[WRXB215]

In the software, click on "Phone System" on the left. In the "Phone System" screen that comes up, edit the "Radio ID Code" on the right.

[Socalgmrs]

Must be programmed on a computer via software.   On and off is menu 14    I’d bet it’s in the software you have. If not does chirp support this radio?  Rt systems?   I don’t know.