If your band has a simple one-dimensional (linear) structure, you can create it with SymmetryWorks just by choosing the appropriate tiling size, see Borders and frieze patterns
. For more complex designs, when parts themselves are symmetric arrangements, you first use SymmetryWorks to create the arrangements. Then enclose the arrangements in symbols and use them as building blocks in another SymmetryWorks pattern. In this way you can freely mix symmetries and create band designs of any complexity.