Hey,
You need to set the Items of the Combo Box as below:
Choices(SharePointConnection.FieldName)
Where SharePointConnection is the name of the SharePoint List you have in the app and FieldName is the name of the Choice field in the SharePoint List. You need to make sure that column has the Display choices using setting set to Checkboxes (allow multiple selections).
In the app you can save the selected items back using a patch like below
Patch(SharePointConnection,
Defaults(SharePointConnection),
{
Title: "Something",
FieldName: ComboBox1.SelectedItems
}
)
Hopefully that helps and is clear enough.
