How to generate UML

Hi

I am new for intellij , i am using ideaIU10.5.2 , and i have been given a project and there is a class that i need to update but before that i have analysis the usage of methods of that class .
Can anybody help me , is there any way i can genrate UML , or class diagram , or anyother way by wich i can know where this class is beging used in the project.


Thanks a lot
Komal