Dear Ahmed Morsy,
ChimeraX does have a Dock Prep tool,
<https://rbvi.ucsf.edu/chimerax/docs/user/tools/dockprep.html>

...but it does not have general minimization, sorry, that is still work in progress.  See the short list of features not yet in ChimeraX:
<https://www.rbvi.ucsf.edu/chimerax/progress.html>

There are some features in ChimeraX that can do a little minimization but it is not as complete as in Chimera.  See:
<https://rbvi.ucsf.edu/chimerax/docs/user/tools/mousemodes.html#openmm>
<https://rbvi.ucsf.edu/chimerax/docs/user/commands/tug.html>

There are dynamics in the ChimeraX ISOLDE plugin, but it may be for advanced users such as cryo-EM structural biologists.
<https://cxtoolshed.rbvi.ucsf.edu/apps/chimeraxisolde>

I hope this helps,
Elaine
-----
Elaine C. Meng, Ph.D.                     
UCSF Chimera(X) team
Resource for Biocomputing, Visualization, and Informatics
Department of Pharmaceutical Chemistry
University of California, San Francisco