TLDR: After selecting to add an ISA or LISA as a source, you must provide the contribution amount and specify the account type. The outstanding balance will update accordingly, and you can edit or remove the savings if needed. Evidence confirming the account balance must be uploaded as a new task.
Details of your ISA or LISA
After selecting to add a source, you will then have the option to select an ISA or LISA. When adding either you'll need to provide the following information:
The amount you are contributing towards the purchase
Whether the account is an ISA or LISA
Once you have added the source, you'll see the outstanding balance update to reflect this. If you need to change or remove the savings, please select 'edit' next to it.
Evidencing your ISA or LISA
If you have added an ISA or LISA as a source, you'll need to provide evidence of this. You'll be given a new task to upload a document confirming the balance of the account.