As netbat says. I will add that every profession had a base cost for each of four basic combat skills: melee, ranged, martial arts and Directed spells. Then there was a menu of options such as added attack improved parry, faster (increase to initiative). These options replaced most of the combat skills from RoCo2 such as two weapon combo, reverse strike, iai strike, disarm and so on. You mix and match the options you want from the menu of choices and then cross reference the cost of the options with the base cost of the combat skill to find the actual DP cost for each rank in that style.
Here is an example from the book.
WHIP FIGHTER STYLE
Legends tell of the occasional adventurer, who uses a long whip as their weapon. These adventurers were so good that it often seemed as if any whip in their hands were like a living creature. The Whip Fighter style is often considered unique in that it actually incorporated Specific Maneuvers from many different types of fighting, thanks to the versatility of the weapon.
Unlike many other melee weapons, the attacks that are made with a whip can be performed at a small range, one that is equal to the length of the whip being used. Thus a Whip Fighter who is wielding a 10’ long whip may make his attacks at a range of 10’. The downside to this is that the character may not make any attacks with the whip is the target is closer than half of the length of the whip.
Elements: Individual Weapon Focus (whip) (2), Additional Attacks (2), Additional Foes (1), Agile Defense (2), Basic Swing (0), Basic Grapple (0), 4 Known Maneuvers (4)
Available Maneuvers: Defensive Strike (1), Disarm (1), Fast Strike (1), Feint (1), Grab (1), Grappling Disarm (1), Killing Strike (1), Legsweep (1), Martial Grab (1), Offensive Strike (1), Reverse Stroke (1), Sacrifice Disarm (1), Sacrifice Strike (1)
Total Style Point Value: 11
If you were a fighter your base melee skill cost is 1/5 so we would cross reference that with the total style point value of 11 to get a skill cost of 3/8.
The CC offers 20 plus pages of options for building styles so you can build just about any combat style you can imagine if you are prepared to pay the DP cost of the final skill.