Allow multiple selections for hashtags creation #911
Description
What problem does this address?
A user asked about the possibility of displaying "same hashtags for all" and "create hashtags from categories" at the same time,
ref: https://wordpress.org/support/topic/hashtags-show-both-categories-and-common-for-all/#post-17409906
What is your proposed solution?
Allow multiple selections from the hashtags dropdown.
Will this feature require documentation? (Optional)
None