To hold it in what? The storage drawer of the range? Did it come with the range? If so, call GE. If it came with the broiler pan, again, call GE.
There were ranges that had two brackets/guides welded to the underside of the oven in the storage compartment and the broiler pan would slide into them to store in an out-of-the-way place. Maybe this hooks to the underside of the oven in the same area for similar use.