...
Also while browsing the Activity graph of a certain project, you can select one of its repositories from the Repository Selection drop-down menu with the list of all the repositories of the current project. Learn more
Time Span
To set a time span, navigate to the Time Span menu and select one of the options from the drop-down list.
...
Below the commits and pull requests charts, there are contributors icons. Hover over icons to see contributors names and emails. Icons of Bitbucket Server Stash users are clickable. Clicking them takes you to the Contributions tab of Bitbucket Server Stash user profile.
Activity
In the Activity section below the charts, all commits and pull requests of the selected time span are shown as the activity stream with links to the associated JIRA issues, hashes and Change Type lozenges.
...