You no longer need to go to the Google and Microsoft Ads interfaces anymore in order to adjust your Campaign and Shared Budget daily budgets. Within each Budget you now have a Budget Allocation tab, this will display the Campaign and Shared Budgets within your budget and you can update the daily budget amounts directly.
Note: this does give you the ability to increase or decrease your daily budgets, so make note of this when updating. There are Current, New, and Variance totals at the bottom to show the impact of your updates
Click 'Edit Budget Allocations' from the triple dot menu
Review and update any of the included rows, using the 'New' column
Press 'Update Budgets' and confirm via the modal
The updated budgets are sent to the respective platforms immediately