Select all/none with a filter card
I am building a domo embed/everywhere page and want to have the ability to filter by country/countries across all cards.
I have tried using the differnet Filter cards and teh most suitable seems to be the 'Checkbox Selector' however this does not appear to have a select all/none option whic make the filter extremely ungainly where you have mopre than a dozen options.
Is there any way to do this? Or a clever way round?
Thanks in advance!