Once you save many projects and the map gets clustered it is a good time to start organizing your projects. Open the top left menu.
Here you can access:
The menu functions as a filter so if you select the Favorite projects, all other projects will be hidden.
In order to select a project, click on it and tick the blank box. This way you can also continue to select multiple projects. A new menu on the right will pop up where you see all the selected projects. You can view the selected projects using Show list view or Clear the selection.
Once you select project(s) a new menu will appear on top. Click on 'Add tag' icon to add a tag to selected projects or to create a new tag. In the top left menu now you can filter your projects according to their tags. You can also remove the tags from this menu.
Select the projects that you want to archive and click on Archive button