Hi Paul,
Thank you for posting your question on Microsoft Community!
After going through your post, it appears that you need more information to edit lock screen timeout settings.
In-order to edit the lock screen settings, refer the following.
You can try these steps to change the Lock Screen time.
a. Press Windows Key and W key.
b. Enter Edit power plan and press enter.
c. Click on Change advanced power settings.
d. Locate and expand Display.
e. Expand Console lock display off timeout.
f. Set how many minutes you want, and click/tap on OK.
NOTE: The default time is 1 minute. Setting this to 0 (zero) minutes will set the display to never turn off from the lock screen.
Hope this information helps you. Please do let us know if you need any assistance with Windows, we’ll be glad to assist you.