"Select all" button?

Is there a possibility to insert an option to select all options e.g. of a custom field?
I know that in fact everything is selected when nothing is selected, but in my case, a custom field is filtered that does apply to only a part of the posts. Thus, selecting all options of a certain custom field would in fact exclude posts which do not have any value in this custom field.

https://www.ads-software.com/plugins/filter-custom-fields-taxonomies-light/