Normally at 0600 when the curfew is lifted and there is sufficient holding delay, both runways are utilised. Forgive my memory here, but if I remember correctly, if there is 10 minutes holding delay at 0600, both runways are available. If at 0630 there is still a 5 minute delay, both runways are still available, in an attempt to have minimal delay at 0700. Ideally the T4 stuff goes on the south runway.
That's TEAMing Tactically Enhanced Arrivals Measures/Management - I always admire the people who come up with these acronyms...
Can you team during the day as well as early morning? What are the criteria to start teaming?