A consultant/planner works for 2 or more clients. When visiting client A. The team members, (vertical) events and projects of Client A should be directly visible in one planning board without manually uncheck/hide those items.
Change between planningsboards
Connect people to a company/planningsboard
Connect events to a company/planningsboard
Connect activities and labels to a company /planningsboard.
Use the browser tabs to display the different planningsboard. This way we can use the browser functionality and it will leave more space available for the planningsboard.
Or just like Google Spreadsheets use a footer fixed on the bottom of the page.