excel solver constraints

Hi all,

Good day!

I am currently facing some difficulties in constructing the constraints for my solver model.

Referring to the sample attached, I have to make an schedule for employees to attend training sessions, 2 times per month.

I have 2 constraints that I am not very sure on how to add in:
1) 2 sessions have to be at least 2 weeks apart. It doesn't have to be exactly 14 days. For example, if 1st session is on 1st week, 2nd session must be at least on 3rd week, anyday.

2) The sessions must be scheduled on the day the are scheduled to work, as shown in the second table in my sample file.

Hope that my request is clear.
Appreciate any assistance!

Thank you!!