Download HUB(직원용) APK file (kr.barotel.hubadmin_35_15738863.apk) from APKPure.live, then follow these steps:
Update Phone Settings
Go to your phone Settings page
Tap Security or Applications (varies with device)
Check the Unknown Sources box
Confirm with OK
Go to Downloads
Open Downloads on your device by going to My Files or Files
Tap the APK file you downloaded (kr.barotel.hubadmin_35_15738863.apk)
Tap Install when prompted, the APK file you downloaded will be installed on your device.
How to install HUB(직원용) APK on Windows PC 7/8/10/11 or MAC?
Download HUB(직원용) APK file (kr.barotel.hubadmin_35_15738863.apk) from APKPure.live to your PC (ex: C://Users/xxx/Downloads/(kr.barotel.hubadmin_35_15738863.apk), then follow these steps appear on screen.
Using Emulator:
Download And Install one Emulator Softwares (Ex: Bluestacks, GenyMotion, NoxPlayer)
Simple install APK on PC by drag and drop file kr.barotel.hubadmin_35_15738863.apk on Emulator screen
HUB(직원용) APK Pros & Cons
Pros
This app is safe, it's not require high risk permissions
Compatible with 64-bit device (some android device and current Bluestacks)
Cons
No best performance On PC (Windows, MAC) (because it's not exists X86 variant)