Hello, if you wan't to postpone Windows 10 updates the only way (to my knowledge) is to change the times at which the updates are delivered. You can complete this by the directions listed below:
Click (or press) the Windows key
Click on the "Settings" option indicated by the gear or cog symbol
Within the "Settings" menu click on the "Update & security" option
When the new window opens, click on the "Windows Update" option (this option should be open by default)
Under the "Update settings" list click on "Change active hours"
All you have to do next is set the "Start time" at which you use you PC and set the "End time" at which you are finished using your PC. Windows 10 will not update or restart your PC during those times (make sure to "Save" you changes or else Windows 10 will not apply your settings, however when Windows 10 updates, the settings revert back to their defaults so be sure to change them every time Windows 10 updates.
I hope this works for you