Onboarding and CSE Process - Scheduling and Project Management

I am working on building up a new CS Team which includes CSM and CSE roles. Our CSE role will be helping to complete additional implementation work after the initial onboarding work is complete. I am curious if anyone uses a particular scheduling software or project management software to schedule customers for project work. We have a small team and would like to begin scheduling and forecasting project work for the year. We currently use Basecamp for our projects, but it is not helpful with scheduling future work and project timelines.