Logging into Member Areas

Hello!

I have a member area but instead of having a Member Area Join button, we need to have one that just says "Log In" that directs the user to the attached screenshot below.

Members are being manually signed up by the marketing department and supplied with their own log in details so ideally the window needs to show the Log In only, rather than confuse the users by asking them to sign up.

I can create a normal button rather than the Member Area button however I can't link it to bring up the Log In only window, only the Join Member Area window.

The page is currently public and not locked under any Member Area restrictions if anyone needs the URL (www.absolutecp.co.uk/kaspas-login)

It currently directs to the Access Denied page, but I want to avoid using these as this needs to be personalised with a different logo etc and this is not possible on the system pages (as far as I know!)