Better Controsl for Selecting Players and Days Filters

[DonyorM]

Currently the controls for selecting which players and days to view is either uncheck all players and days together, or uncheck each one at a time. Often (in a spamming report), I want to see just the chats of a specific player across all days, or the chats of all players on a specific day. Could you add an option to uncheck/check all players, and a seperate option to uncheck/check all days, rather than having them all tied up into one?

[Jerme]

If you hold ctrl while selecting a checkbox, you uncheck every checkbox in the group (=time/players), except the one you clicked. If you hold shift while clicking a checkbox, you check every box of the group and uncheck the one you clicked.