How to expand HDD in VMWare?

in my file system i have 11gb and i need to expand and used the 32gb unknown? how can i increase the file system ? see the image below

sorry for the mod mishap.

but this would be more appropriate for other tech forums like Stack Overflow and ofcourse you will find ample advice on this if you search on Google. Let us keep posts on forum related to ERPNext ecosystem. Closing this thread.