How can I do waypoint movements on XCOM 2 on iOS?

I can’t figure out how to set waypoints in the iOS (i’m on iPad specifically) version of XCOM 2.

How can I do waypoint movements in XCOM-2 seems to cover this for PC, and How can I do waypoint movements in XCOM 2 (console version)? addresses it on home consoles, but neither cover iOS.

I’m fairly sure it’s possible because I think I did it by accident once and was confused by the weird path, but can’t for the life of me figure out how.