I read When should I create a new tag? How do I request a new tag if I don't have enough rep?. The relevant section says
If you have enough reputation to create the tag
If you think there is a clear need for a tag, go ahead and create it yourself. If the new tag causes controversy, you can always come back to your site's meta to ask the community to judge it.
If you are creating a new tag, you may be prompted about it before you can submit your edit or new post. This warning is enabled on a site-specific basis.
My question is about what happens after I create the tag. (To avoid swamping the active questions list, my personal guideline is to edit tags in small batches, e.g. half a dozen in 12 hours, in an established well-trafficked site, and more slowly in a Beta site.)
Example of a tag I plan to create: I encountered a question on Academia that related to remote collaboration. This is a thing in academia. Surprisingly, at Academia SE we don't yet have a remote-collaboration tag. I have enough rep to create it. This OP would benefit, I think, from reading other Q&A pages related to remote collaboration. Once a bunch of questions have that tag, participants and visitors will have an easier time finding questions about that topic. (This was just an example. A similar situation could come up on other sites.)
(A) Shall I wait, after creating the tag, before assigning the new tag to a first batch of relevant existing questions, in case there is an objection?
(B) Or is it better to assign the new tag to a small batch of questions right away, so others can see how I'm envisioning the new tag being used?
Edit to clarify:
Please assume that if I am creating a tag, it's on a site that I know well.
I was assuming I would create the tag by adding it to a question. So from its inception, it would be associated with at least one question.
The longest I would wait before beginning the small batch tagging process, as in (A), would be a couple of days or a week (depending on the pace of the particular site). (Contrast this with Option B, where I would go ahead and tag a small batch of questions right after creating the tag.)