L-Acoustics A15i Series Owner's Manual page 72

Rigging procedures
b) Insert the stub at the front of the enclosure.
c) Insert the stub at the rear and secure the rigging axis.
5. On each A15i-LIFT, secure a shackle to the desired pickup point.
A15i-LIFT pickup point
Select the same pickup point on each A15i-LIFT within an array of up to 6 enclosures.
For larger arrays, refer to
6. Raise the array until the bottom of the array is easily accessible.
72
Radial arrays of 7 enclosures and more (p.112).
A15i owner's manual (EN) version 1.0