UE5 - Multi Key Action (Chorded Action)

 

Create IA(input actions) for Ctrl and Z, then map them in the IMC. After mapping Ctrl, configure its Key Setting and add a Trigger. Set the Trigger to use a Chorded Action, and assign the chorded action to the Z IA(input action). Finally, configure the Key Setting for the Z IA(input action) to complete the setup.

UE4 - to receive input to two actors at the same time

 

If true "Consume Input" 
If you run on a high-priority actor, the low-priority actor will not receive this input.