Can the forms be used to make indentation pattern on a wet cement area?

The QUIKRETE® Walk Maker® Building Forms that are approximately 24” square are designed to form an individual section of a walkway, by having material poured into the forms. Trying to use the form as a stamp may not produce the exact pattern you are looking for due to the flexibility of the form. The effectiveness of the use of this product in this fashion would also depend on the material you are stamping, if it has stone similar to concrete then it potentially could deform the form and not produce the pattern you are looking for. The durability of the form will also be reduced due to the added stress of the stamping. We have tested it as a stamp using products without stone, and the resulting pattern did not have crisp lines and was less than desirable.

You can do both. Either pour the cement into it or press it into already poured cement.