This addon is supposed to be a non-destructive workflow, but you may apply the lattice only or all modifiers in one click also, there is an option to delete related lattice.
There is more setting on the "gear" icon button
Quick action to rotate lattice directly both on edit and object mode
Version 1.2.0
AddedThe new Group operator allows you to set up multiple objects with a single lattice.
Change the text button “Multilattice” to “Individual.”
Fix Remove unwanted panel on Misc tab and other minor fixes.
