ROTH IRA basis & employer program

Two questions related to ROTH IRA's.  I have 2 seperate ROTH IRA's.  One I set up on my own and contribed after tax funds to over multiple years.  The second was initiated by my employer as a ROTH 401K as part of our benefits.  When I retired the employer ROTH 401K was transferred to a ROTH IRA investment account.  I am now drawing from both and they are NOT required distributions.  They are qualified and not taxable.  

Turbo Tax is asking  for "prior year ROTH IRA contributions".  Somewhere in the TT Community info I read that you do not include employer plans in this number.    Yet the instructions only say to exclude earnings and losses or amounts converted from a traditional IRA. 

Question 1.  Do both my Roth IRA accounts get included in that total?

Question 2.  Where do I find the basis, since contributions have been made of the last 20+ years, via payroll deductions and employer contributions.?