- If you want to withdraw your collateral to another Electum bitcoin purse, you can do it via the Send tab. Specify the bitcoin address in the Pay To field and the amount in the Amount field. You can use the Fee slider to set the transaction fee. After that click Send.
- If you need to get the collateral from Biterest again, you can do this by creating a new Electrum purse (current purse will be available to you as a file in the Electrum data folder. For future access to it you will need the password set at purse creation). Purse creation is available in the File>New/Restore tab.