Where is the "Add-Ins" custom menu stored in an office VBA application?

Solution 1:

Check under access options, current database .............. It is likely it was created using macros, so you need to find the name of the macro, then edit the macro if need be.

i have attached two images.

1. Shows the name of the macro under access options

2. Shows the location of the macro under macro sections in navigation

Solution 2:

I finally found a function inside a module which is creating the menus. It seems that in this case, the menus are manually created/updated running that function manually, so I had to go to view code (Alt+F11), place the cursor inside the function and hit F5 to execute.

One sample of code how to create/edit custom menus with this technique can be found here, but in the new versions of office VBA can be done like this.