First create a standard collapse element and assign it an id:
[expand title="This is the Master Trigger" id="multitrig"]
Now if an additional trigger link is needed, just insert a span with „collapseomatic noarrow“ class and and id that is ‚bot-[the_target_id]‘ like so:
<span class="collapseomatic noarrow" id="bot-multitrig">This is a second trigger</span>
This is a second trigger
Collapse-Pro-Matic Class Triggers
As of version 1.3.2 of Collapse-Pro-Matic an external trigger can also be assigned to any element using only class names. Check out collapse-pro-matic advanced external triggers for more information and a working demo.