Maroon clowns are some of the more violent clowns when it comes to mating. Are you asking when will they pair and make babies? or when will they bond, get along, and start filling their individual roles of male and female?
You are likely years away from having a spawning pair of clowns. One item to consider if this is your ultimate goal is, is to add a ceramic tile to the aquarium at a 45 degree angle. The two will likely take refuge to it and use it to practice their spawning activities.
If the dominant female has stopped attaching the smaller male than it may be a matter of a couple weeks before they are interacting with one another as a "pair"