When on a contraption, deployers will only try to maintait a single item in their hands, but some mods add items that use more that one at a time. This includes Create's own vaults, which can be placed 4 or 9 at a time.
This addon an item tag to vaults that the deployer checks to see if it should grab multiple items at a time. Decoative vaults from several other Create addons have also been added to the tag conditionally.
Deployers on contraptions don't place tanks in 3x3 regardless of the amount they have in hand, so tanks and similar block are not currently tagged to get grabbed more. They can be added easily by datapack if it ever becomes beneficial to do so.
This addon also adds 3 extra tags for the deployer to grab items of configurable sizes, in case you have other mods that place multiple items at a time but use different. The small tag comes pre-configured for TerraFirmaCraft supports.
