Add more logical operations for filtering in Categories
Currently ticking more than one category shows tasks that belong to either of them (so filtering works as "OR"). I'd like to have also "AND" operator, so that I could search for "Person X tasks in Project Y only". Switchin between "OR" and "AND" could be done by drop-down list in "Categories" viewer, similat to "Tree-List" options in "Tasks" viewer.
We already include this. Under the View menu, see Filter > “Filter on all checked categories”
That swaps between ALL versus ANY, and there is also an option of including this as a dropdown in the toolbar above the categories.
See otherwise this request for additional features: https://taskcoach.uservoice.com/forums/26465-desktop-version-windows-linux-mac-of-task-coach/suggestions/563259-show-all-but-selected-categories?ref=title