Leg lifting in lineouts U15 and below NOT permitted

Although lineout lifting from U13 - U15s is permitted it must be executed from the bottom of the (rugby) shorts*. U16s and up are permitted to lift from the legs.
* Skins are not shorts

This is an ARU U19 Law variation:

TOUCH AND LINEOUT
19.10 (d) Add: At age groups U15 and below, lifting and/or supporting players
must not support the jumping team-mate below the shorts. There is to be no lifting on the legs.
Sanction: Free Kick on the 15m line.

19.10 (e) Add: At age groups U15 and below, players who are going to lift or
support a team-mate jumping for the ball may not pre-grip below the shorts.
Sanction: Free Kick on the 15m line.

ACTRRA Executive