Is it possible to book JE directly to vendor or customer in Quick book, yet present i am not able to do that

Let me help you today, @userbeyondgarage-fin.

You can create journal entry directly to vendors or customers in QuickBooks Online. Journal entries are the last resort for entering transactions. However, I suggest entering customer and supplier transactions. 

If you still wish to use a journal entry, make sure that you have access to create a journal entry. You may check this reference to learn more about the different options for user roles and access permissions: User roles and access rights in QuickBooks Online.

When creating a journal entry, I also recommend consulting an accountant for the appropriate accounts to use. 

I've also added this article on how to record JE in QuickBooks: Create a journal entry

Feel free to get back to us if you have additional concerns. I'll be around to help you. Have a pleasant day.