Leverage modifications are linked to your equity; as it climbs to a higher tier, the leverage automatically decreases. When your equity falls to a lower tier, the leverage will stay the same unless the client takes the initiative to request a change through the Client Portal.
For Example:
Client Deposit $100 the leverage he chooses is 1: 2000, then trade and reached $1000 in equity, the leverage will down to 1: 1000. Then he withdraws or loss his fund becomes $100, the leverage will remain at 1:1000 until he requests to change leverage at client portal.