Finding the Structure Block Items in Creative Mode
The Dedicated Creative Tab
This mod adds its own creative inventory group for structure block items, so you do not have to hunt through the Redstone or Miscellaneous tabs to find them. Open your creative inventory and look for the mod's tab — everything related to structure blocks is grouped there for quick access.
Grabbing What You Need
From that tab you can pull the Structure Block and any related items the mod exposes. Drag them into your hotbar and place them like any other block. If you cannot see the tab, make sure you are actually in Creative mode — the group only appears in the creative inventory, not in Survival.
Using Them Right Away
Once placed, right-click the block to open its interface. From there you can switch between Save, Load, Corner, and Jigsaw modes depending on your task. Because the mod lifts the vanilla size cap, the size fields in this interface accept much larger values than you may be used to. Pair this with the extended bounding-box render distance: even on a build hundreds of blocks across, you can still see the outline corners while you work.