WorkGuru supports the bulk creation of leads via a csv import template. The import template can be uploaded on the imports dashboard (Administration -> Imports)
Select the leads option:
Lead Import Field Definition
|Lead client name (must exist)
|Lead category. Must match an existing category name exactly.
|Lead stage. Must match an existing category stage name exactly.
|Lead status, (Options: Current, Won, Lost)
|Forecast quote value
|Date of expected lead won date. DD/MM/YYYY
|Lead closure probability as percentage (Number 100 = 100%)
|Quote owner - must match existing user's full name exactly.