I think with enforcement you just ask the court to enforce the order. You can raise any other issues in the application as well to explain the problem. Are you using a lawyer? I was told that if you ask for anything other than straight enforcement, it becomes an application to vary. But it depends because you're mid proceedings. Judges can amend orders at an enforcement order. You can explain any issues in your application form. For a C79 you start with the list of breaches:
Eg
Friday xth Feb 3pm to 3pm Saturday xth Feb
Tuesday xth Feb 9am to to 4pm
etc
Then you write the piece about what the issues are. So you can mention all the other issues and this might prompt the court to amend the order so it works better.
Enforcing the order is basically just telling someone they have to follow it! A stern talking to perhaps. But it can also mean the Judge settles any issues as well.