After you have planned your project(s), you want the team members to know what they will be working on and exactly how many hours they've been allocated. Linking this with the coworkers' timesheet will make it readily available, and the coworkers themselves can keep track of their hour usage without you having to peer over their shoulders at all times. Of course, many projects will go over budget due to unforeseen circumstances, but when you have a clear concept of how many hours have been used relative to what you planned, you'll also have the flexibility to rearrange bookings or potentially negotiate a higher budget. Transparency is key here, and all project participants should ideally have access to total time usage on the projects they're part of. This helps to keep everyone accountable and in most cases keep hour usage down since you'll be working with a clear limit on available hours. The financial budgets might not be available to every coworker, but the hours should be.