Easy: You’ll just need to be able to view your hidden yard. If I understand your question correctly, zg, this can easily be accomplished with either a wireless (non-tethered) throttle or a tethered throttle that can be unplugged and plugged into a different control panel located near or at your hidden yard.
zg, when you say that your yard will be “hidden”, does that mean you will have difficultly accessing it easily?
How are you doing it now under DC? If you can not see the end of the track to stop the train using DCC, what method are you using to stop the train under DC control?
Cut a gap in one rail at least as long as the loco is from the end of the track. Use a toggle switch to turn power on and off to that section. Leave switch off, run loco into the gapped section and it will stop when it gets entirely into it. To move loco, turn switch on and reverse power to track. Works in DCC as well as DC.