As for “Enclose Supporting Documents” what you need to do is first write down the Bank account number of the bank from which you will be transferring the funds from. For example: POSB 123-4-5678. As for “Anticipate…” just put 0.
You would then be expected to photocopy the Executive Summary of your bank account statement from that bank account and attach it together with your bank application, to prove that the above-said bank account has sufficient funds to provide for that amount in Euros you wish to have transferred to your DB account.
I hope this helps!