Those curves are called RF(radius-to-fix) Legs in RNP procedures. It requires you to make a constant radius turn between two fix. In the profile view, it gives you the direction of the turn if it’s a RF leg(LT ARC, RT ARC: left turn, right turn). These legs are hard to be done accurately in IF since you don’t have the sufficient equipment to calculate and navigate your turn, and never use NAV mode for those turns since it will turn your plane to an intercept course with the planned course(30 degrees), then make another turn to be on course. However you can handfly your aircraft to get your track as close as possible with the chart.
TG014 to TG013 and TG012 to TG011 are not RF legs, as shown in the profile view.