Project sidebar
Open a spreadsheet from the links on the project page (project sidebar > Spreadsheets).
In the project view, you can change your spreadsheet using the dropdown option.
If you want to add a new spreadsheet in your Project view, click Spreadsheets.
Issue navigator
Open a spreadsheet from the edit button on Jira Issue Navigator (Top navigation bar > Issues).
You can also change the columns displayed on your spreadsheet. Please see the KB article.
Top navigation bar
Open a spreadsheet from the app screen (Top navigation bar > Apps > Spreadsheets).
Recent shows the spreadsheets which you opened recently.
System default filters are the standard system filters Jira provides initially. You are not able to change their query parameters. Please launch a spreadsheet from the issue navigator screen if you would like to use custom JQL or filter.
At the issue navigator screen, you can change the columns and reorder them too.