Ensure you have any ancillaries created for assignment of Support Bearer, Rods Fixings etc. See Ancillary Creation for more information on how this can be achieved.
Open the global Database and select Fittings Specifications Supports.
Click the icon to create a new support and enter a name and select the type from the drop-down menu.
Click the Breakpoints option on the lower left of the dialog to determine which ancillaries need to be linked across the 3 tabs. (Bearer, Rod and Top Fixings). A new breakpoint can be used to determine any differences due to strength or rating. See the example which shows how multiple entries are used for various sizes of ductwork.
Apply the newly created Support to the Specification providing the spacing requirements needed between each quantity of support (length based).See Specifications on how to configure spacings and other settings using Specifications for automatic selection at takeoff.