At AMZ we have different types of events.

Consumption event: Consume x amount of diamonds / gold to receive X reward.

This means that you need to Spend the required amount of gold or diamonds to collect the reward

Some events may be restricted to recharged gold or diamonds only. Other events do not have this restriction.

Recharge event: Recharge X amount of diamonds / gold to receive X Reward

This means that you need to Recharge the required amount of gold or diamonds to collect the reward

Single Recharge: Recharge X amount of diamonds / gold to receive X Reward.

This is a multiple recharge event that requires a player to recharge exact amounts to get the rewards

The event says recharge 500, 1000, 5000, 10,000 to get rewards.

Players need to recharge 500 to get the 500 reward, you can not recharge 1000 to get the 500 and 1000 rewards.

Total Recharge: Recharge X amount of diamonds / gold to receive X Reward.

This is a single or multiple recharge event that requires a player to recharge up to a certain amount to get the rewards

The event says recharge 500, 1000, 5000, 10,000 to get rewards.

This means that you can recharge any amount you choose and get the rewards equal to the total amount you have recharged over the period of the event.

So if you recharge 4x 5000, you can claim all rewards up to 20,000 in the event