Tap the Selection Tool (the arrow icon)
To select one or multiple items:
Tap a shape to select it
Tap & drag a selection around various shapes
Tap Copy in the popup menu
Tap the Paste icon to duplicate it within the same glyph
To paste into a different glyph, use either way:
Tap & hold on any cell and tap the Paste icon
Tap & drag a small selection and tap the Paste icon