To apply a dynamic to the score, use one of the following methods:
For additional dynamics use the Master Palette (Shift+F9). You can also create a custom palette for future use.
To create a crescendo or decrescendo sign, see Hairpin.
Click on the dynamic to select it, and adjust its Velocity in the Inspector—higher for louder, lower for softer.
Via the Inspector you can set the staves affected by a dynamic. The "Dynamic range" is by default set to "part," which means all staves for an instrument will be affected. Changing this to "staff" will limit the dynamic to the staff it is entered on only. Changing this to "System" will cause all instruments to play this dynamic.
In the Basic workspace, there are 8 options in the Dynamics palette: ppp, pp, p, mp, mf, f, ff, fff.
In the Advanced workspace, there are all of the above plus 15 additional options in the Dynamics palette: fp, sf, sfz, sff, sffz, sfp, sfpp, rfz, rf, fz, m, r, s, z, n.
In the Dynamics section of the Master Palette, there are all of the above plus 6 additional options: pppppp, ppppp, pppp, ffff, fffff, ffffff.
Any dynamic can be edited after being added to the score, just like standard text. See Text editing.