[Plugin: Reed Write] Multiselect Query

See the get_posts() documentation.

https://codex.www.ads-software.com/Template_Tags/get_posts

Can you give me an example of what goes into the Options Data box?

$args = array( ‘numberposts’ => 5, ‘offset’=> 1, ‘category’ => 1 );
or
array( ‘numberposts’ => 5, ‘offset’=> 1, ‘category’ => 1 )
or
‘numberposts’ => 5, ‘offset’=> 1, ‘category’ => 1

You need to put in the string version of the query:

numberposts=5&offset=1category=1

Actually that should be:

numberposts=5&offset=1&category=1

See https://codex.www.ads-software.com/Class_Reference/WP_Query#Parameters