How can you add your own sco. Mod menus on the PS3?

Hello I still play and mod around gta tbogt and tlad even if it’s very hard to come by to see any players these days.
Maybe it’s the same method as for gta v.

But how can I add my own sco. mod menu into my PS3 CFW Mod menu?
I have a script and network.img files both are modded and work fine. But I have another mod menu with script and network.img I’d like to take a mod menu out of it and place it on the other script and network.img as a sco. file mod menu on the ps3.


How can I do that? How does this work?
Thx