cleaned up information about custom objects and selective sync

Author: markzegarelli

src/connections/sources/catalog/cloud-apps/salesforce/index.md

@@ -92,7 +92,10 @@ Collections are the groupings of resources we pull from your source. In your war
 
 ### Custom Objects
 
-If you'd like to sync any SFDC custom objects, just [contact us]https://segment.com/help/contact/ and we'll get it set up. Include the [API names](https://help.salesforce.com/articleView?id=000007594&language=en_US&type=1) of the custom objects. We'll add support for this to the UI soon!
+Business tier customers can select and add custom objects from the Selective Sync page in the Salesforce source settings. 
+
+Self service customers, please contact us with the [API names](https://help.salesforce.com/articleView?id=000007594&language=en_US&type=1) of the custom objects you want to add.
+
 
 ### Deleting Records
 
@@ -103,6 +106,7 @@ At this time, we do not support hard deletes in Salesforce. Use of hard deletes
 ## Collection Properties
 
 Segment performs a one-to-one mapping of all publicly available fields (standard and custom) from Salesforce. To see the full list of the standard fields refer to the Saleforce field documentation linked in each collection above. If you've added custom fields to an existing collection, [contact us]https://segment.com/help/contact/ and we'll get those set up to sync. You do not need to include the field names.
+Segment performs a one-to-one mapping of all publicly available fields (standard and custom) from Salesforce. To see the full list of the standard fields refer to the Saleforce field documentation linked in each collection above. If you've added custom fields to an existing collection, [contact us](https://segment.com/help/contact/) and we'll get those set up to sync. You do not need to include the field names.
 
 ## Adding Destinations
 Currently, Warehouses are the only supported destination for object-cloud sources.