A user is able to call a function of a general script for reusability and functionality.
Script A function a() will call function b() of Script B
1. Customization > Scripting > Scripts > New
2. Select desired script
3. Set required script record fields
4. Under libraries subtab, select general script(s)
5. Save > deploy
The user will now be able to call functions of the Library Script Files specified in the script record for the main script.