If you would prefer to have it so only the Blog entries from the Master Admin are shown on the front page of your Jamroom, the key is to modify the main index template of your active skin and add band_id="0" to the {jr_ranking} function call.

As an example, if you are using the Cobalt3 Skin, you would want to modify the jamroom/skins/Cobalt3/jr_index.tpl and change this:

{jr_ranking mode="blog" row_template="jr_index_blog.tpl" show="4" cache_time=$smarty.config.blog_cache_time}

to this:

{jr_ranking mode="blog" row_template="jr_index_blog.tpl" band_id="0" show="4" cache_time=$smarty.config.blog_cache_time}

The key is the addition of the band_id="0" part - this will make it so only the admin's blog entries show.