Signed Commission is applied for Real Estate Agencies who get commission for managing Estates.

If you are not a Real Estate Agency this functionality might not work for you and you can enter 0 (zero value) in that field of Signed Commision.

If you are a Real Estate Agency, the Signed Commission depends on your discussion with the Estate Director/Owner. The value of Signed Commission is agreed upon depending on what you are going to manage on the Estate.
This is the value you can register in the field of Signed Commission.