mame2003-plus tab key not working

[nazree]

 Hi,
Before this I using mame2003 I don't have problem but when I change to mame2003-plus my tab key and d-pad not working when run the game rom.
I google and search in this forum and get some finding about the problem.
I already try delete default.cfg (/home/pi/RetroPie/roms/arcade/mame2003-plus/cfg/default.cfg) but still not solve the tab problem. I put my ROM in arcade.
I read this thread about mame2003-plus: https://retropie.org.uk/forum/topic/17766/mame2003-plus-hundreds-of-new-games-improved-input-features-new-bugs-now-with-runahead-support/1297?page=65
After reading long post I got the idea what the issue but I dunno to implement it.
This interesting post by @grant2258 to do:

quick menu options
Input interface = simultaneous
Legacy Remapping = enabled
Control mapping = analog or digital see above for more information or just change the input general to change manually like you would have to do on stand alone mame.

How to go to quick menu options? Sorry I very new in this retropie.
When I load the game rom and press keyboard this come out :

There are no quick menu options. After lunch the game rom my keyboard no respond.
Please help.
Thanks in advance.

[grant2258]

https://github.com/RetroPie/RetroPie-Setup/wiki/Controller-Configuration

default is select + x when mame2003-plus or any other retroarch core is running to bring up rgui

[nazree]

Already try before the combination select + x but its not working, nothing happen, rgui not come out.
After try few combination, found hot key button + x working now can enter rgui. Maybe because I enable hot key button on my remote.
Thanks @grant2258 and others help me solve the problem.