To make Gridlines changes in your project, go to menu Format-Gridlines or select Gridlines from the contextual menu (right-click on the right pane in Gantt Chart view)

To make the Resource Usage view fit your needs exactly, you can customize it or create a new version. When you close your project, the customized view will be lost. To customize the Resource Usage view, you can:
1. Display different resource information.
2. Display information in different timescales.
3. Change the units of time that are displayed to view your project at the level of detail you need.
4. View usage information for a specific time period.

Use the Resource Usage view when you want to:
1. View information on a resource's task assignment, such as cost, work allocation, and work availability.
2. See which resources are overallocated and by how much.
3. View assignments more evenly among resources.
4. Find out how many hours each resource is scheduled to work.
5. See the work capacity (in terms of a percentage) for each resource.
6. View how much time each resource has available for additional work assignments.
7. View each resource's work progress in days, weeks, months, or other time increments.
8. View resource costs.
9. View the amount of work a person spends on a task.

The Progress Lines can be set using the Dates and Intervals tab in the Progress Lines dialog box to set preferences for the way you want to display dates and intervals with progress lines.

You can:
1. Display progress lines at regular intervals.
2. Display progress lines based on a specific status date.
3. Display progress lines for specific dates you select.
4. Display progress lines compared with the baseline plan or to the actual plan.

Please download and install the latest app from this link: https://www.projectplan365.com/download/.