Click the account selector button at the top of Google Ads to open the list. Use the Search accounts field to filter by name, select one or more accounts and click Open; the Clear button deselects everything. You can view data from several accounts at once: campaigns from all selected accounts appear together in the table. Click the star next to an account to favorite it, and it moves to the top of the list on any device. The last account you used is saved and opens automatically on your next visit. The button with the external link icon (Open Google Ads account(s)) opens the selected account directly in Google Ads.

The selector also has Select all (selects the accounts in the list, respecting your search), Shift + click to select a range, and the account groups from Account Center in the Groups (N) row, with Save as group to save your selection.