List all events at one venue, from every profile, on a page of their own.
Create a skin template, such as skins/xxMySkin/venue_events.tpl: it's at yoursite.com/venue_events.
{jrCore_include template="header.tpl"}
<div class="container">
<h1>Events at {$_post.venue|jrCore_entity_string}</h1>
{jrCore_list module="jrEvent" search1="event_location = `$_post.venue`" order_by="event_date numerical_asc" pagebreak="10" page=$_post.p pager=true}
</div>
{jrCore_include template="footer.tpl"}The backticks put the value of $_post.venue into the search.
In the Event module's list or detail template (as a skin override: see Changing a Module's Template), link each venue to the page:
<a href="{$jamroom_url}/venue_events/venue={$item.event_location|urlencode}">{$item.event_location}</a>venue=... in the address becomes $_post.venue. Check the Event module's DataStore Browser for the exact key names on your site.