If you want to switch all protections level off at once:
Open AVG User Interface.
On the Tools menu select Advanced settings.
Open Temporarily disable AVG protection in the tree on the left side.
On the right side select Temporarily disable AVG protection.
Click OK.
In the opened window choose for how long the protection will be disabled and whether you also want to disable the Firewall. All parts will be automatically enabled after the selected time.