The desktop version of Affinity Photo has a series of helpful Move tool modifiers available in the toolbar. Which of these are also available in the iPad version either as a button, a menu option, or as a multi-touch modifier?
Enable Transform Origin (I'm particularly interested in this one)
Hide Selection while Dragging
Show Alignment Handles
Transform Objects Separately
Cycle Selection Box
(attached screenshot is from Affinity Photo for Mac 1.7.2.151)