I would like to suggest a function/button to quickly
- feed as many resources as possible to TC/Forge/HL,
- return as many resources as possible from them.
The idea is that when we want to clear a training camp with 100days of level 11 training and use the resource in another training camp, you can imagine how long time your finger needs to press the same"+" and “-” button.
With this All-in button, the system can determine how many training/backing objects are allowed according to your storage and do it in one push. For the All-out button, the system can determine how many resources you can get from the building to your storage (without any waste of resources of course), and executed in one push.