Add punctuation: Scope shows who is standing in front of the door at any time and from any place And not only in front of the door Scope can also retrieve images from other surveillance cameras onto its monitor
A: Scope shows who is standing in front of the door at any time and from any place. And not only in front of the door: Scope can also retrieve images from other surveillance cameras onto its monitor.

Add punctuation: After completing the security information click OK
A: After completing the security information, click OK.

Add punctuation: There are various levels of integration from bilateral interconnection between two countries to connections spanning multiple countries paired with an integrated electricity market
A:
There are various levels of integration, from bilateral interconnection between two countries, to connections spanning multiple countries paired with an integrated electricity market.