How do I use form with auxiliary call on iPad version?

What Did You Do?

Held message icon and selected Compose with form.

What Happened?

In normal message, I can change call, but form opens up with primary call. There is no way to change call before opening form.

What Did You Expect?

Need to be able to change to auxiliary call either before or after selecting form.

Device

iPad

iOS / iPadOS / macOS Version

27.0

App Version

1.6.4