The control options are basically dependent on the Fritz!OS version.
Group function:
The group function, with which several devices can be controlled together and also operated in master/slave function, is currently not yet available for shutters.
Template function:
This function is available from Fritz!OS version 7.25, which is available for some Fritz!Box models since March 2021.
Via the templates you can control several devices together or also use a common time program.