To achieve this, you can edit the source of the parameters on each of the visuals on the dashboard. The source for each visual can be changed to read from a shared dashboard parameter.
These are the steps to do this-
1.) First click on the three dots in the top right corner of the visual on the dashboard.
2.) Click on "Edit Parameters"
3.) Click the edit button underneath the "Value Source" column
4.) From there, you can either make that parameter a dashboard level parameter or choose an existing dashboard parameter as the source for the visual
Using this method, you can create one or a series of dashboard level parameters which can then be applied to all of the corresponding visuals on the dashboard.