When creating a new license group in Subscriptions > Legacy Licenses > License Groups, users will not be able to create a license group by using only membership criteria as the finish button is disabled.
Aria Operations 8.18.x
VCF 9.0 enhancements for licensing have been introduced in 8.18. The legacy licensing will no longer be used in future releases.
Create your group membership criteria as usual and before you press next, expand the section "Objects to always include" and expand one of the items in the left tree, such as "Configuration Management", click NEXT and after that, the "Finish" button will be active.