Bulk Actions dropdown provides you ability to Sync, Delete, Test Connection and Open WP Admin or Front page on one or more child sites:
To use the feature, select the wanted child site by checking the checkbox next to the child site, select the wanted action and click the Apply button.
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By combining Filters and Bulk Actions features you can easily sync, delete, … a specific group of sites. For example, if you want to Sync only child sites from one of your site groups, Select the wanted group and click the Display button. After the group is displayed, select all sites and use the Sync bulk action.
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