Hi @Yasmine Oloufa,
Welcome to Atlassian Community!
This is a public forum, so you should be careful when adding company information here. I removed the URL from your post.
You would need an app in order to do this. There are a couple of them available in the Marketplace, I use Custom Charts and it allows you to add a control to the dashboard so that a user can select what they want to filter on.
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