collaborate on — to work together with someone or a group of people on a particular project or task

three diverse professionals lean over architectural blueprints spread across the table, each pointing to different sections while discussing ideas. One person sketches modifications while another takes notes and the third measures distances on the plans. Their heads are close together as they share ideas and build on each other's suggestions. The blueprints show a building design that's clearly evolving through their combined input. Laptops, coffee cups, and design tools are scattered around them, showing an active work session. Other team members in the background also work together at whiteboards and computers. people working together with someone or a group of people on a particular project