@@omahasammanThere isn’t a mod manager for Real Solar System. You probably mean Module Manager. Look up the relevant download info, you probably made a mistake during installation. Alternatively, consider using CKAN to install the mod automatically.
I tried making my own such model in KPS:RO. After watching the video of the real thing many times from may angles, I saw that they activate and shut off the thrusters in clusters of 4 + 4 + 1 for the landing burn. This allows the total thrust to be much less than 40% the entire pack. The last few seconds being just one thruster. Since KSP's throttling isn't versatile like that, I think it's fair to patch the throttle profile for the Merlin 1 non-vacuum to go as low as 4.5%, since it comes in a set of 9.
can someone say me what mod is being used for that red target landing zone?? some say trajectories mod is used for this but it only show landing zone target in map view..
Click on trajectories mod tab, in the left where all the mods are. And on opened window there is setting, which lets you to make trajectory to appear not only in map view