Hi Norbert
Here a Märklinist from Paris, France, using Rocrail since over a decade, lately using a CS3
Don't go away yet as principles in TC or Rocrail are VERY close if not quite identical.

Here is the little I know
- never try to replicate what Rocrail or TC does for you (e.g. control a train, its speed in a direct way as TC or Rocrail controls it in as both control those in respect of WHERE the train is and the possible occupation of nearby blocks). This direct speed ,control may lead to very confusing and CONFLICTING results (starting slow, progressive and then full throttle.)

- you want to start a train with delay. In Rocrail, this is called a schedule either started by an absolute time (e.g.: 15:37) or by a relative time (e.g.: T0+37 minutes). This schedule lists the blocks or areas (when multiple tracks for destination exitst in parallel), possible change of direction, etc. Of course all this will be executed only if safety permits (non-occupied blocks, etc). Of course the clock may be the real time (a bit too slow) or with accelerated time x2, x3, ...x10)

- now you want to trigger fonctions. With Rocrail (probably very similar with TC, they are called ACTIONS) you may include one specific fonction (public announcement, turn on platform lights etc) in a block (when entering, when departing, when reserved), in a route (when reserved, when freed, etc), you may condition an action for a given loco or train, when in forward, when in reverse or indifferent) and each time, associated with the fonction triggering you may set a delay timer

- you want to change speed of trains Instead of doing it directly you must set FOR EACH loco, the line speed, station speed, minimum speed (so that an heavy freight does not behave like a TGV
- Next you must set the inertia adjustement for each loco IN THE LOCO ITSELF by programming its decoder.
- once you have done those adjustments, TC or RR will set the station speed or line speed in accordance with signals and settings (you may check the box for reduced speed on a zone full of track pieces.

Here is what I do with Rocrail (correcting the speed, position the loco exactly above a decoupler (loco-specific program) before commanding decoupling.
Approx 2:12 into the video, you may see a program to position each loco exactly in front of the water crane and a fonction (Action) that triggers the water crane either to the side of the tender or to the center of the tender depending where the water hole is located


I hope this helps (sorry there is so much more to say)
Jean