iPad connection

I work at an IT Help Desk and we often have times where we TeamViewer into computers. In this instance, I am trying to TeamViewer into my own desktop computer, which I know the password to but ctrl alt delete is blocking my way to actually logging in. I want a way to hit ctrl alt delete on my iPad that actually registers on the windows device or a different set of key combo's. 

I've researched this a bit and I have not seen any videos or tutorials in the discussion with my issue. I also tried ctrl alt del from the keyboard but it won't take it. 


Does anyone have any idea on a way we could use the iPad on TeamViewer to Windows machines to hit ctrl alt del?