Silly Summons Question

[JmOz]

Character has Summon imps x4, 4 charges

okay does this mean he can summon 4 imps, each imp takes a charge or he can summon a total of 16 imps, in batches of 4

really silly question that occured when asking this, if it is the latter, could he turn the charges into "fuel charges" to allow him still to summon a batch of up to 4, but if he only chooses to summon 2, he can still summon 14 more (max batch still being 4)

[Steve Long]

Each Charge can Summon up to four imps. If the character chooses to Summon fewer, he may do so, but that doesn’t allow him to “bank” the remainder for later. The standard rules about how many Summoned beings a character can have in existence at once still applies.