Newbie advice re aircraft not launching as a group

[beads]

Working my way through the tutorials.

Some aircraft will happily launch as a group when I select that option, others will launch as individual aircraft and I am unable to later select them and form a group.

The aircraft in the group launch are all the same.

What would stop them being able to be a group?

Thanks

[thewood1]

Are they on seperate missions or seperate sides? Allied versus same side.

[Gunner98]

They have to be the same aircraft with the same loadout as well.

If they are in a mission there is a setting in the mission window that sets flight size, could be it as well.

[beads]

Flight size I one thing I didn't check, thanks. I will revisit the scenario and check