Is it worded correctly?

The archive boxes are now available in the documentation office on the basement floor. If anyone wants to start packing, those can use them.

As for the office relocation, we have kept archive boxes in the documentation office on the basement floor. If anyone wants to start packing, they can take it from the documentation office / those can use them / please use them.

As for the office relocation, we have arranged archive boxes for packing, and they are being kept in the documentation office on the basement floor. Anyone who wants to start packing, please use them.

Which one is grammatically correct and appropriate one?