I am here contained by uk, my tier 4 student visa will expire on november. how can i apply for tier 4 dependent visa?

please advise me the correct guidelines. thank you.
Here is the informstion and the forms you need.

Note that at hand are new restrictions on student dependents now. If the prevalent Tier 4 visa holder is on a course for less than six months, he cannot have dependents within the UK.

Also, your permission to work will be determined by the course the Tier 4 visa holder is studying. If the Tier 4 visa holder's course is for less than 12 months or below level level, unless it is a foundation degree course, afterwards dependents will not be allowed to work.

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