I have built Todoist into a small CRM System. So I have a project named CRM, I have sub-task named for groups of propsects (lawyers, insurance, doctors, etc), and the sub-sub task with prospects company names. I used the notes section to keep track of contact info, track activies, store documents associated with this contact. When I have activity for this contact I just schedule the date and time, label it with CRM and appointment or phone call.
I built a filter that should show me just the appointments or just the phone calls associated with CRM Project, once filtered I can re-order them into the proper sequence.
I built a filter called CRM with a query of CRM & Appointments. Shouldn't this filter those task that have the labels CRM & Appointments? I get nothing. :-S