yes, for eg.you have parent template T1 and child template T2add allowedchildren property to T1 with value T2and add allowedparent property to T2 with value T1. or use cq:allowedTemplates property to content/jcr:content node 

1) Always give values from config node instead of giving values from felix console2) for taking values from map.publish     go to Configuration tab -> Apache Sling JCR resource resolver -> Mapping location     eg. /etc/map.publish    for taking values from config.author   goto cq-instllation-dir/crx...