Adding nodes to jobqueus SLURM

I can’t find in the documentation how I add nodes to jobques.
I have created a job queu via wlm[slurm[->jobsqueues->program_001
I then
category use compute
assign slurmclient
or use slurmclient (if exists)
append queues program_001

But when I show program_001 under jobques, it shows nothing in the Nodes field, and when I do a sinfo or squeue, the nodelist is empty. Jobs sit in the pending state because they have no nodes to go to.
What did I miss?