How do I attach each of these?

1. Royal Icing flowers to Fondant?

2. Chocolate molds to fondant?

Thanks in advance!

Im not sure about the chocolate molds, but the flowers to the fondant should adhere with a dot of royal icing.

Or at-least I think I read that on here some where.

Both can be attached with royal icing

Both can also be attached with melted chocolate.

I have used both royal icing and melted chocolate to attach flowers to fondant covered cakes.