dashboard is done according to the requirements, there is the navigation as mentioned as left navigationa and also there is activity log and there is project board for the assigned and completed tasks.
#professional
to make the dashboard professional the design inspiration is took from the Jira dashboard and also material design and small interactions are taken care.Also Typography is taken care in order to make fonts look professional.
#user friendly
The designs are not to complex, simplicity of design is maintained. Here is the link for Figma desin https://www.figma.com/file/74sd64Bo6YVMcx1KdEGb4J/Feather.io?node-id=0%3A1
And also considering age group as the matter the design is friendly to use and also used the fonts which are clear for vision and night mode is used for the good visibility of words.