For each enumerator you can set the initial value. The default value is 1 and the numbering starts with 1. If you want to continue the already started numbering, specify in this field the initial value. The initial value doesn't need for extra zeros to the left, prefix, ets. It needs only digits.
In this example, the first number of the saved document will be 182. Next in 183, 184, etc.

Important: it works only for first document. If you have already saved documents, this value is ignored and the numbering is continuing.