Locations are at the top of the screenshots

Add Pickup to the E_SegmentType like shown below

Add Pickup Item variable type S_Item and Can Pick Up variables to the Master Build Part like shown in the image below

Add Pickup to the nodes shown.

Add the highlighted nodes in the image below

Copy the demolish node and connect it up like shown in the image below

Add pickup to the nodes shown in the image below

Add the bool to this node

Open the copied collapsed node in the BP_MasterRadialMenu and tick the bool like in the image below

Go to all the placeable build parts for example the campfire and in the class defaults set the item and count

Next copy close your project and copy the file linked below and put it in the textures/UI folder.

https://www.dropbox.com/s/mvnvejtq538eruc/T_90_Unselected_UI.zip?dl=0

Next put this file in the blueprints/HUD folder

https://www.dropbox.com/s/6up1hfmwv589ts7/BP_BuildingOptionsMenu.uasset?dl=0