How to implement filled in venue custom fields under admin settings?

I’m using the event organiser pro plugin.

What I’m trying to do is figure out how to display an eo_venue_map shortcode based on whether its a formal or informal tour. And this “formal” and “informal” are both categories.

So initially I thought about querying the event categories, but then I thought of a simpler solution. When creating a new event and clicking the + sign to add a new venue to it and when the category is chosen, for example “formal”, it will save this information in the eo_venue_meta table.

So for example, I could have two meta keys _formal and _informal and their meta value would be true or false if the venue contains at least one event matching that event category. Or the meta_values could contain a list of the event ID’s associated with the _formal meta_key.

So basically, i’de be saving the information about what category its in, straight into the eo_venue_meta table.

So then I could do something like:

$tourtype = $args[‘tour’];

switch ($region) {
case “BC”:

$venue_querybc = array(
array(
‘key’ => ‘_state’,
‘value’ => ‘British Columbia’
),
array(
‘key’ => $tourtype,
‘value’ => ‘something like true’,
),
);

$venue_ids = eo_get_venues( array( ‘meta_query’ => $venue_querybc ) );
$venue_slug_or_id = array_map(‘intval’,wp_list_pluck($venue_ids,’term_id’));
$mapflag = 1;
break;

Where $tourtype would be either formal or informal of course.

Whats the best way to go about doing this when a category has been selected for an event after its been created? I’m not sure what files to edit under the Pro plugin and regular plugin.

Thanks

https://www.ads-software.com/extend/plugins/event-organiser/