Shopware 6 config multi-select

sw6-config-multi-select

Define in config.xml:

<component name="sw-entity-multi-id-select">
    <name>b2bCustomerGroupIds</name>
    <entity>customer_group</entity>
    <label>Choose multiple customer groups as B2B groups</label>
    <label lang="de-DE">Wählen Sie die für B2B vorgesehenen Kundengruppen.</label>
</component>

Use in twig:
{% if not page.group.id in shopware.config.MyPlugin.config.b2bCustomerGroupIds %}{% endif %}