Actually, you have several variants using adverbs in sentences. Take for example "unlikely" adverb to express scenario that is not likely to happen. We can put it to the subordinate close at the beginning of the sentence or place it with the verb, like this:
It is unlikely you'll need to use them at the moment.
You'll unlikely need to use them at the moment.
The question is what the difference between 2 options? Are there other ways how we can express that idea?