Step 1: Select Mesh > Controls... > Hex (in this case it could be something else but hex looks the most professional) > Bottom-up. Then you select the region (partition, cell) of the part you wish to mesh with bottom-up technique.
Step 2: Click on Mesh > Create Bottom-Up Mesh... Then select the cell (region, partition) that you just gave mesh controls to. The "Create Bottom-Up Mesh" box will appear.
Step 3: Select the Source side. Click "Done" when you have selected the source side. This is the side where the mesh will be created in two dimensions, essentially the bottom of the part, so that the mesh can be swept through the volume.
Step 4: Then select at least one connecting side in this example I choose five connecting sides. The more sides you have the more structured the mesh will be. When you have selected the side(s) click "Done". In some cases you have have to specify a Target side but in general is is not necessary.
Step 5: Click "Apply" in the "Create Bottom-Up Mesh" box and you are done! So that you know the details this mesh had 2304 elements, with 0 analysis errors and 48 analysis warnings. (That means it's pretty good.)
If you have any questions just ask, although I might not respond quickly.