▶ Source: MSDN article Remote Desktop Services Shortcut Keys Given how much attention paid Remote Desktop Client developers to create alternate keyboard shortcuts, I would say this is the designed way of using multiple RDP sessions with ease. Ctrl+ Alt+ End to press Ctrl+ Alt+ Del in RDP session.Alt+ Home to open Start menu in RDP session.Alt+ PgUp or Alt+ PgDn to switch between the tasks in RDP session.Alt+ Tab to switch between RDP sessions.Right-click title bar of RDP session window when sized as 'restored' and in menu, check menu item Keeping the same screen resolution: scale down the remote screen.Keeping the same scale of content: lower the resolution of the RDP session screen.If you want to avoid the need of scrolling, you have two options, depending on your usage preference: But some areas of your remote desktop will be off-screen so client window becomes scrollable.

Resize the RDP window to maximum size so it fills nearly entire screen. When your RDP session is maximized, press restore button on its blue connection bar (or Ctrl+ Alt+ Break), so it will leave maximized mode.

This way, you can still use Alt+ Tab to rapidly switch between RDP sessions. Remote desktop client is equipped with alternate keyboard shortcuts to supply common keyboard shortcuts inside your RDP session so you can keep original shortcuts for actions on your desktop.

Sysinternals rdcman