Deductions for 1099-Misc and Non 1099 income

I work from home -- all my work is done from home.  I have an independent contractor job and get a 1099.  Then I have other independent contractor without 1099.  The software is requiring that deductions be entered for each type of income separately.  But I do ALL my 1099 and non-1099 income from home.  So how do I split that?  Can I do it as a lump sum for both?

 

Do I determine what percentage of my income is the 1099, and what percentage is non-1099 and use those same percentages to split the income?