If you've been looking for the right schedule planner online for too long, it just might be you're not asking the right questions. What do you need it for? What's your team like? What need does your team have?
Teamweek is one of the few schedule planners online to allow flexibility in every sense. When your plans change, as they always do, just drag and drop. And you're done. The schedule's rearranged.
To enhance the communication, you can always share your schedule planner online. Embed it to your homepage or share it with a private link to let other know what you're working on.
Encourage your team members to tick the "done" box, so you know when they've finished an assignment.