In most situations except static defense, IMTs are based on the principle of fire and movement.
When closing on the enemy position, the team breaks down into pairs for better angles of suppression, and this technique is referred to as "pepper-potting" (British/Commonwealth).
[1] Most IMTs are taught in the form of a battle drill, a series of choreographed steps that occur automatically in reaction to certain stimuli, such as sighting an enemy to the front, or being fired upon by an enemy from the flank.
The initial stages of the drill are always the same and therefore action does not require full appraisal of the situation.
In combat, this allows the first few moments of the engagement to occur almost automatically and gives the soldiers a way to respond appropriately and predictably while the unit commander evaluates the situation prior to issuing orders.