Hi! Some of the standard templates in Workspace is not suitable for us and I am asked, if we can hide or delete some of the templates? Is that possible?

I have been building a dashboard with several panels now. The dashboard will be used by users who need different segments on it. Right now, they have to choose the segment for each panel they open. Is there a function, where we can split the dashboard into several panels to optimize the loading time but choose the segments only once? Any tips or tricks?