As of Captain America: Civil War, the remaining Avengers are under the purview of a UN Council established by the Sokovia Accords. The implication during the discussion about the Accords is that this council would decide when and where the Avengers would be deployed, and also when they would not be deployed.
In the chronologically next installment of the Marvel Cinematic Universe*, Spider-Man: Homecoming, we see Iron Man taking action several times, including
repairing the ship that Spider-Man failed to repair on his own
Are we meant to understand that, due to the Sokovia Accords, the UN Council had to approve Iron Man to take that action? Does their involvement only come into play for situations that require the entire team of Avengers, rather than a single individual member? It seems unlikely that a UN Council could convene and reach a decision in time for Iron Man to carry out such a time-critical mission, given how suddenly the situation presented itself.
*(Barring any timeline weirdness such as discussed in Which year does Spider-Man: Homecoming take place in?)