Using Engines as RCS thrusters

that could work too
@Matteovir

i believe i will resolve it using two sets of thrusters, one for rotation and one for translation, activated by two different activation groups and using pitch roll and yaw as inputs, maybe built one inside another so that they seem to be the same
@Zenithspeed

they worked for me, but you need to make sure you have advanced properties on when writing it in or it'll revert back to normal
@Matteovir

@Zenithspeed is it possible to give more inputs like Translate up+pitch?

enable "show advanced properties" or whatever and you'll get access to an extended list of inputs on input controllers, such as translate up+side+forwards, simply do something like
Translate Up+Pitch on the rocket engine throttle input for example, it'll probably work

@plane918273645 still with mods. I'm sorry. Tomorrow I'll upload a stock model.

@ChaoticGraviton I love it because offer a complete panel of fuels/oxidizers and engine cycles (and still works) . However my question is valid also with stock engines and fuels

@Matteovir using REO is a bad idea, as it's no longer supported.

@plane918273645
here it is with stock engines in methalox configuration

test 2

@plane918273645 i believe it would be the same with stock engines. if you wish to give it a try and hints i could produce the same configuration with stock tanks and engines...

You normally would do it through input controllers, and just type in the needed activation input. But since this is with a mod I can’t help ya then

Test capsule with monoprop RCS

here it is