How to create a new window in Selenium webdriver? Or something like that.

Next: I have an application that monitors a webpage, and I'm using the Selenium web driver ... The application now opens a page with calls from a client, shreds the data and generates alert popups for the analyst reporting new calls and etc ... It's all working but I need to add a requested functionality that I can not solve at all: The program switches between two open tabs to do the scraping ... I need to open a new unchecked window that keep the page open, otherwise I would drop the program session and program the user session and vice versa ... I need the program to open a new window so that the user can access the page and do what you need, and that it does not alternate with the others in which the program does the scraping. Thank you in advance.