Shelly Plus 2PM How to prevent double input command when using a OFF timer?

I use the Shelly Plus 2PM for a roller shutter motor (both options as Button or Switch work fine).

However, how to configure that if an OFF Timer is used (for i.e. in the wired Input1) the other wired Input2 can not be activated till the OFF Timer in the Input1 has finished.

This is for preventing activating 2 wired input orders at the same time when a OFF Timer is running.

Thanks! You are right, I forgot to set the Shelly to Cover.