1095-A How to share policy with more than one adult child not a dependent

My husband and I pay Marketplace Health Insurance for our 2 adult children whom we do not claim as dependents.  I see on Turbo Tax how to share a policy but it will only let me share with one other person.  How do I get Turbo Tax to allow me to have a shared policy with both of my adult children who are not dependents on my tax return?  Plus can I claim 100% of the policy premium because I pay for their insurance?