Make a new storey in Storey settings and cut and paste from the original storey element to the other storey. Once on the other storey you will need to reset the height above storey as it will have moved by the distance as set in the Storey settings for elevation
Cheers John
John Hyland : ARINA : www.arina.biz
User ver 4 to 12 - Jumped to v22 - so many options and settings!!!
OSX 10.15.6 [Catalina] : Archicad 22 : 15" MacBook Pro 2019 [/size]