Shortcut Key Taken up by deleted automation

Hiya, had previously deleted an old automation with the shortcut Shift+1 previously bound it to it

Making a new automation and attempting to bind Shift+1 tells me that the automation is still using it, but actually pressing Shift+1 with Assistant up tells me that the automation cannot be found

How can i ammend this?
I am an Amateur at UiPath so it would be appreciated if I was guided in layman terms