In Nimbus the records are by automatically synced for example if you added an item its record will be automatically synced you dint have to sync it manually.
In very few cases such as applying a discount may take 1 minute to sync its data so if you want to do it before that time period you can sync the data manually by going to the Utilities>General Utilities>Sync Master Data tab.
After that click the Sync Master Data tab to sync data.
