How can I find the name of a function and replace with another name in a plugin?

I would like to replace a button name "CV Manager" with "Upload Resume". The button is part of a list of menu buttons in a user dashboard. It function is to direct candidates to upload their resumes and I would like the button to say just that. Can anyone please tell me where in the plugin database I can find that button and replace it by using the "plugin editor" in wordpress? Thank you