Per diem is on the 16th check...it is extremely difficult to decipher from looking at the page 2/3, etc of pay register. You can see the forcasted amount of perdiem on page one of the pay register on left side. As far as looking to see start and stop times for the per diem while you are on the road or flying internationally,I haven't cracked that nut yet.
Expenses are handled outside of the payroll process...you will not see any info on pay stub.
Healthcare and dental and LTD come out of both checks equally...but Life Insurance only comes out of 16th check.