Hi there! There's a couple Facebook groups out there, including a semi official one that you might want to try. Hopefully they'll be able to help out over there.

Click your tools arrow, then select the sled icone and then the item you want to put to sled.

Sometimes the sled option is not available. In that case click the tools arrow, then bag icon to put the item to storage (unless already in storage of course) then from storage go to the item and click the sled icon.