How to run XCUITest on multiple simulators for a test plan?

What I'm trying to achieve is the image below, where I run a test plan and it runs on "iPhone XS Max, iPad Pro 13". Which should runs on multiple destinations, but I couldn't figure out to where set it.

I think I should put the destination below somewhere, but not sure where.

xcodebuild test -workspace YourApp.xcworkspace \
                -scheme "YourUITestsTarget" \
                -destination "platform=iOS Simulator,OS=13,name=iPad Pro (12.9-inch)" \
                -destination "platform=iOS Simulator,OS=13,name=iPhone XS Max" \