The most common and most likely answer to this crossword clue is the 4 plus 3 plus 8 letter word WEAR THE TROUSERS
W
E
A
R
T
H
E
T
R
O
U
S
E
R
S
More clues leading to the result WEAR THE TROUSERS
- Feeble folk creating disturbance outside our home have control
- Take control with Globe customers on tube, minutes away
- Don’t show supporting members what union leader will do
- Damage to art where employers call the shots
- To be the boss‘s squeeze was sheer torture
- Theresa’s Euro writ: I must leave shambles and show some leadership?
- Don bags lead in partnership
- Be dominant in union?
- Slacks after rough weather — you must take control
- . Be dominant in union // but shelter inferior members?
Buddy explains!

The straight part
We know that "you must take control" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case you must take control = wear the trousers.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.