How do I properly exchange wedding rings if bride has a band set?

My soon to be wife’s wedding ring is a 2 piece set: engagement ring and a wedding band. How do I exchange rings during the ceremony? Should she already have the engagement ring on, and I just add the wedding band? Or should both her engagement ring and wedding band be on the ring pillow and I put both on her? If so, one at a time or simultaneously?

What is the difference between a wedding ring and a wedding band?

And what should a wedding band look like?
How can you tell the difference from a normal ring to a wedding ring?
Are wedding rings always made of gold?
How much should a simple wedding ring/band cost?

How do wedding and engagement rings work?

This topic confuses me…
Is the engagment ring traditionally more expensive, or cheaper than the wedding ring?

Why are there 2 rings (engagement and wedding) wouldnt that be extremely expensive?

Does the guy get an engagement ring too, or is the just the girl?

Does the girl have to buy the guys wedding ring?

Does the couple shop for the wedding rings together?

Also, isn’t there an engagement/wedding ring that is like 2 pieces, and when the wedding comes you get the 2nd piece?

Wedding Tips: How to Choose Nice Wedding Rings

Presenting rings is sign of showing love to one’s beloved. It is considered as precious thing in many countries. It is a symbol of faith. The moment of exchanging rings between bride and groom cannot be forgotten in their life. It symbolizes past, present and future of relationship of couples.

By wearing ring, married couples declare their eternal love to each other. Wedding rings are normally worn on the ring finger of left hand. However, after marriage, the couple can choose to wear ring on any finger.