$ cat scribe-config.yaml

scribe-config.yaml

---
dest-access-mode: ReadWriteOnce
dest-namespace: dest
dest-copy-method: Snapshot
source-pvc: mysql-pv-claim
source-copy-method: Snapshot
source-namespace: source
dest-service-type: LoadBalancer
source-service-type: LoadBalancer
source-cron-spec: '*/2 * * * *'
dest-kube-context: destuser
dest-kube-clustername: destination123
source-kube-context: sourceuser
source-kube-clustername: api-source-com:6443

(If not multi-cluster, you can omit Lines 11-14) 
You might want:
dest-storage-class: something  (it will default to whatever the default sc is for the cluster) 

To get the values for clustername and kube-context:
0) login to each cluster as a user (kubeadmin)
0) rename contexts for each of those kubeadmin contexts (or keep them, that's fine ex:'kubectl config rename-context long-string destuser')
1) first export multiple kubeconfigs "export KUBECONFIG=~/kubeconfig1:~/kubeconfig2
2) run 'kubectl config get-contexts' to find context & clustername for source, dest
3) add the above Lines 11-14 w/ your cluster values.