Changing password

I’d like to change the password for OmniPresence on my mbp running OSX 10.9.4

I select the information graphic (“i”) from the drop down menu and see my username grayed out and my password hidden with dots which are auto-selected. I can’t change the password or delete the existing password.

How do I change the password on OmniPresence?

Thanks for any help, I was unable to find the answer in the forums.