Our software is not part of Office 365. Our tool is called Project Plan 365 and it is compatible with Microsoft Project in the sense that you can open in our tool the files saved in Microsoft Project or you can open in Microsoft Project the files created in our tool, but we are not a Microsoft owned application, so you can’t Sign In inside the Microsoft Project application with the subscription purchased for our application or vice versa.

Use the Gantt Chart chart view to:

View tasks graphically while still having access to detailed information about the tasks.
 
View tasks as rolled-up bars or milestones on their respective summary task bars, enabling you to see your whole project without losing sight of the tasks.

See how tasks progress across time and evaluate the slack and slippage between tasks. You can track progress by comparing planned and actual start and finish dates, and by checking the completion percentage of each task.

See how tasks progress across time. Review progress by comparing planned (baseline) dates and actual start and finish dates, and by checking the progress of each task.
 
See the baselines the project manager saved for the project. 

For more benefits of using the Gantt Chart view, please check the All about Gantt Chart page, which also includes a video.

How to minimize/maximize the display sheet?

In order to minimize the Gantt Chart, pull to the right/left the bar that separates the grid from the Gantt Chart.

We are sorry but this option isn't available in our application at this point.