Is it possible to have some Employee's tips paid through Tip Payouts, and the remainder through 7shifts Payroll?

If you're using Tip Payouts, you can:

 
1. Initiate a Tip Payout batch.
   
   
2. Exclude the Employees from this batch that are to be paid through 7shifts Payroll.
   
   
3. Process your Tip Payout batch and push the remaining tips to 7shifts Payroll.  That is, any remaining values in the 'Tips Owed' for those excluded individuals can be forwarded to 7shifts Payroll.