Ajax TruClient function library update issue

We are using PC/ALM 11.5x and VuGen 11.5x and i ran into this issue.

How to add a new function to an existing Global Library”. For Example, let’s say

1. User created a function “Login” and saved it in “Flight” library.
2. Exported the Flight library to local machine.
3. Created a new Ajax TruClient firefox script and in this new script imported “Flight” library.
4. User want to create another function “Logout” and add it to this existing “Flight” library. Right now when user try to create a new function, it does not give you the option to update the global library. User have the option to save this function into a new library only. I understand that user should not be allowed to update the Global library. But once the global function library is created, how a user can add more functions by including already recorded application steps to this library?

Also, can we save this global library into Test Resources Module in ALM? Is there any to copy function form one local library and paste it to a global library?

We are also in the process of upgrading to PC/ALM/VuGen 12+. Do we have any of these features in version 12.x.