Subordinates are the one who reports or works under the higher level people. The level above are supervisors and level below are subordinates.
The manager always confers with his subordinates before making decisions.
The subordinate clause in your sentence begins with the word before.
In the sentence, "Dolly must clean up her room before she goes out," the word that begins the subordinate clause is before. The subordinate clause is "before she goes out."
Note that the word subordinate can be either an adjective or a verb. Here is an example of the use of this word as a verb. An soldier must be prepared to subordinate his own interets to those of his nation. And here as an adjective: The captain was subordinate to the general.
A second mortgage has a subordinate interest to a first mortgage. The vice president is the president's subordinate. My desire for entertainment is subordinate to my need for food.
Fragment, subordinate clause; indecision, delay, hesitation; hodgepodge, nonsense
It is no kind of conjunction. The word during is a preposition.
The Captain is subordinate to a General in rank.Subordinate has a few meanings. It can mean below someone in status, e.g 'the peasant was subordinate to the King.'It has a similar meaning in that it can be used to describe someone who works for someone else, e.g 'the politician is subordinate to the Prime Minister.'Another use of subordinate is in 'subordinate clause,' which denotes a part of a sentence that adds to the main clause but cannot be used as a sentence in it's own right. For example, in the sentence 'The man rode quickly on his bike,' the subordinate clause would be 'on his bike,' because that is not a complete sentence.
A subordinate clause has a verb and another sentence within it.../././././././././.
You have a complex sentence. Best is the last word of a complete sentence. When is an adverb. It is followed by the word They. The word They starts a complete sentence. Thus, the word when makes the second sentence subordinate to the first sentence. That makes it complex.
Although there are many subordinate conjunctions, the most common are "and", "but", and "or". A subordinate conjunction connects a subordinate clause (a clause that cannot stand alone as a sentence) to a main clause (a complete sentence).
before
A subordinate clause cannot stand alone as a complete sentence because it does not express a complete thought. It depends on an independent clause to form a complete sentence. Subordinate clauses usually act as adverbs, adjectives, or nouns in a sentence.