When I enter a record through the website, is it possible to specify that it should not be linked to my default Activity? (In this case, the location of the record is outside the vice-county that the Activity relates to.)
Alternatively, is it possible to suspend that Activity temporarily while I enter the record, without removing myself from it completely? I believe you can do that on the app.
I don't quite understand what you mean by default activity, or removing yourself from the activity. The 'default' is just adding all records to your account, records should only go into an activity if you either add them via an activity form or they meet the requirements that you have specified for an activity (for example all records within a site boundary).
Hopefully one of these scenarios covers what you are trying to do.